Explore every episode of the podcast Human Performance Outliers Podcast with Zach Bitter
| Title | Pub. Date | Duration | |
|---|---|---|---|
| Run The News | Road Ultras Need Hype & Money In Ultras | 06 Oct 2026 | 01:33:03 | |
Allison Mercer is an ultramarathon athlete who has competed at both 50km and 100km World Championships, Tunnel Hill, and Strolling Jim. She joined me to unpack why the World 100 KM deserves more attention, and what ingredients make ultramarathons grow. Allison: @onewomandanceparty | Strava: https://www.strava.com/athletes/18552474 Episode Sponsors:
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| Episode 503: Last Soul Ultra Steals The Show | Kim Gottwald | 25 Sep 2026 | 00:54:28 | |
Kim Gottwald is a German ultra runner and content creator who went from law student to backyard-ultra standout by documenting extreme projects in public, including a co-win at Go One More in Texas, and a 449 km Last Soul Ultra victory at home. He co-founded the running brand Rappid, became BPN's first German athlete, and now hosts Germany's Last Soul Ultra. He has big plans for expanding Last Soul Ultra into multiple locations, including the US. Kim: kimgottwald.info | IG: @kim.gottwald | YT: @Kim.gottwald Episode Sponsors:
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| Episode 502: Backyard Ultra Records & Recovery | Phil Gore | 22 Sep 2026 | 01:14:34 | |
Phil Gore holds the World Best mark for the Backyard format, completing 119 "yards" for a total of 495.83miles. He recently completed a personal project, called Project 168, where he aimed to see if he would be able to last 168 yards (700 miles). He ended up tapping out at 152 yards (633.75 miles). We discussed this project, what the limiters were, how they have created a longer recovery, and what direction the Backyard Ultra World is going, and how his event raised nearly $300,000 for Telethon, a Western Australian appeal that supports sick, vulnerable, and disadvantaged kids and their families. You can contribute here: philgore.com.au Phil: philgore.com.au | IG: @phil.gore.ultrarunner Episode Sponsors:
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| Episode 501: First Double Amputee To Finish Leadville 100 Mile Run | Brian Reynolds | 10 Sep 2026 | 01:19:36 | |
Brian Reynolds is a Brooks-sponsored double below-knee amputee runner who, in 2026, became the first athlete in that category to finish the Leadville Trail 100 — on his fourth try, in 28 hours 55 minutes. He lost both legs at age four to meningococcemia, a rare bacterial infection with grim survival odds. For years he hid the amputation and stayed off the trails. A Grand Canyon hike cracked that open. He went from powerlifting to a 2:58 marathon, multiple classification records from 5K to the marathon, and Team USA para-athletics. Brian: IG: @brianreynoldsrunner Episode Sponsors:
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| Run The News | Phil Gore Shocks Backyard World & Meg Eckert Targets Men's 6-Day American Record | 07 Sep 2026 | 00:24:26 | |
Phil Gore holds the World Best Backyard record with 119 yards (495.87 miles). In an effort to see what he could actually do, he set up a project targeting yards/hours. Meg Eckert may be the most underrated ultramarathon athlete in the game right now. She is currently on pace to break her own women's 6-day World Record, and also the outright American Record. Finally, I touch on some thoughts around the UTMB events. Episode Sponsors:
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| Episode 500: The Truth Behind Run Slow To Run Fast | Thomas Nobbs | 03 Sep 2026 | 01:12:56 | |
Thomas Nobbs is a professional marathon athlete with a 2:09 PR, and endurance coach. His progression to 2:09 speaks for itself, and his public strava profile shows how he has balanced lots of low intensity running and key quality sessions. Thomas is currently training for the Chicago Marathon, where he plans to once again improve his marathon PR. Thomas: teamrunrun.com/coach/tom-nobbs | IG: @nobbs.not.knobs | Strava: Thomas Nobbs Episode Sponsors:
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| Episode 499: REDs & Body Composition | Dr. Trent Stellingwerff | 28 Aug 2026 | 01:12:50 | |
Dr. Trent Stellingwerff joined the show to discuss the topic of relative energy deficiency syndrome (REDs) in endurance athletes, and body competition management. Trent includes working with the Women's Health, Sport & Performance Institute (WHSP) in Boston Trent is the Chief Performance Officer (CPO) at the Canadian Sports Institute. Trent has developed many national and international collaborations in various applied research projects in the fields of nutrition and physiology, and been a part of 8 IOC position statements. Trent joined the show to discuss the topic of relative energy deficiency syndrome in endurance athletes, and body competition management in athletics. Trent: whspinstitute.org & csipacific.ca/team-members/trent-stellingwerff | X: @TStellingwerff
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| Run The News | Mark Dowdle Goes Crazy At Last Soul Ultra | 24 Aug 2026 | 01:01:14 | |
Mark Dowdle arrives 15 minutes before the start of Last Soul Ultra, but still wins with nearly 400 miles. Should we have more unsupported ultra running events? Badwater 135 lack of streaming and interesting shoe policy. Jeff Garmire joins me to discuss and share his upcoming documentary. Jeff Garmire: freeoutside.com | IG: @thefreeoutside | YT: @Freeoutside Episode Sponsors:
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| Episode 498: 2:59 to 2:18 Marathon | Matt Fox - Sweat Elite | 20 Aug 2026 | 01:29:16 | |
Matt Fox joined me to chat about his interest in the marathon after coming from a National class middle distance background, his trajectory with content creation, the Chinese running shoe market, and his power weight ratio journey. Matt Fox: sweatelite.co | IG: @mattinglisfox Episode Sponsors:
Episode summary: Zach Bitter interviews Matt Fox (Sweat Elite) Matt's background: Former Australian middle-distance runner who twice finished 5th at Olympic/World trials (consistent 1:48 800m). Felt he "failed" after never making a national team, which later fueled his curiosity about how better runners train. How Sweat Elite started: After a failed Strava-like app, Matt launched a site interviewing pros. He later began filming elite workouts (inspired by old FloTrack videos), but it lost money due to last-minute travel costs and limited YouTube revenue. He recouped losses by documenting his own marathon builds. Content landscape: Athletes now prefer posting their own journeys, making third-party workout videos harder. Influencers-as-coaches is a growing issue; both agree formal qualifications aren't required (many great coaches never had them), but buyers should do due diligence. Bad influencer coaches can still introduce people to the sport who later seek better help. Creators they follow: Truett Haynes (humor + ambitious Olympic Trials goal despite current times being far off; recently hired Rory Linkletter). Also Eric Floberg (cinematography) and Rory Linkletter (authenticity, Canadian marathon record pursuit). Weight/body composition debate: Matt accidentally got very lean (70 kg) for a 2:20 marathon, then gained 3–4 kg and plateaued at 2:23–2:24. After noticing he was much larger than the Japanese runners he raced with, he used carb-cycling (high carbs around key sessions, deficit on easy days) to drop back to ~69 kg and ran 2:18–2:19. He has since lost another ~12 kg.
Chinese super shoes: Matt recently lab-tested 12 models from Anta, Li-Ning, 361°, Xtep, Dynafish, etc. Many perform comparably to Western shoes at half the price and often last longer. Notable mentions: Li-Ning Dragon Flight (79 g, technically illegal but extremely fast; a legal version is coming), Anta C10 (very similar to Puma Fast-R), Dynafish trainer (versatile, durable, sub-200 g).
Matt's current status: Recovering from injury, posting daily on Instagram/Strava as Matt Fox. Targeting a 2:17 or faster at the Melbourne Marathon in two months. Timestamps: 0:00:02 — Intro and welcome to the episode 0:00:45 — Matt shares his background and connection to the podcast 0:01:42 — Matt's unusual running journey and early Sweat Elite work 0:04:33 — Matt's competitive middle-distance background and Olympic trials attempts 0:05:50 — Stepping away from elite running and building Sweat Elite 0:07:19 — From a failed app to interviewing pro runners 0:09:06 — Building content, monetization challenges, and workout videos 0:13:10 — Athletes making their own content and the creator/brand shift 0:14:36 — Should influencers need qualifications to coach? 0:21:08 — Coaching credentials and the role of experience 0:22:34 — Content creators Matt is excited about 0:25:46 — Truett Haynes, Rory Linkletter, and the entertainment factor 0:31:34 — Transition to weight, performance, and body composition 0:33:19 — Matt's marathon progression and how weight loss affected performance 0:40:27 — The nuance of weight loss, RED-S, and individual differences 0:48:32 — Why the conversation is different for different runners 0:50:22 — Timing carbohydrates and avoiding energy deficiency 0:52:19 — George Kusche at Comrades 0:57:30 — Josh Kerr seemingly fully optimized 01:03:12 — Chinese running shoes and why they matter 01:06:12 — Jack Crago and testing Chinese shoe models 01:08:25 — Distribution, tariffs, and market access in the U.S. 01:13:02 — Shoe durability and foam life 01:15:28 — Lightest legal shoes and new tech from Chinese brands 01:17:42 — Anta, Puma, and the global shoe market 01:19:04 — Puma concept shoes and performance development 01:20:49 — Why Chinese brands are expanding more slowly in the West 01:22:12 — Matt's trip to China and how he got deeper into shoe tech 01:23:54 — Dynafish and ultra-light trainers 01:26:12 — Wrap-up, where to find Matt, and final thoughts
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| Episode 497: Blood Clot Defeated & Return To Training | 13 Aug 2026 | 00:26:11 | |
I reached the end of my journey with the blood clot I discovered at the end of June. I learned a lot through the process, along with information about my personal risk for blood clotting. I unpack all of that and share my return to training. Episode Sponsors:
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| Episode 496: Fueling Your Ultra: Strategies & Challenges | Vic Johnson | 07 Aug 2026 | 01:09:37 | |
Vic Johnson shares the practical limits of high-carb strategies, discusses how carbohydrate needs can exceed what the gut can absorb, especially under heat and high intensity. Vic shares typical successful ranges, why hotter races and faster pacing worsen digestion, and emphasizes consistent intake over large boluses that can trigger GI issues. They discuss individualizing targets for mid-pack runners, finding a personal carb "cap" in training then scaling back for race day, sex differences (body size, culture, psychology), links between GI issues and disordered eating, the role of day-to-day carb intake in building intestinal transporters, and practical choices between drink mix vs gels. Vic Johnson: mountainsportsnutrition.com | IG: @mountain.sports.dietitian Episode Sponsors:
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| Episode 495: Performance Enhancing Drugs In Ultramarathon | Kilian Korth | 29 Jul 2026 | 01:55:25 | |
Kilian Korth joined the show to have a discussion around ultrarunning's growing professionalization without sophisticated regulated drug testing, the limits and trade-offs of WADA/USADA-style regimes, and why "doping" as a blanket term obscures intent and severity. We unpack gray areas such as THC thresholds, TUE complexity for common medications, transparency vs backlash, influencer incentives, and the future pressure regenerative medicine and technology (e.g., super shoes) may place on sport rules. Kilian: IG: @runtoughmindset | Substack: https://substack.com/@runtoughmindset Sponsors: LMNT: https://drinkLMNT.com/HPO (free sample pack with purchase) deltaG: https://deltagketones.com Code: BITTER20 (20% Off) True Nutrition: https://truenutrition.com/hpo Code: HPO (20% Off) Episode Summary & Notes: Zach Bitter & Kilian Korth on PEDs, incentives, and doping in ultrarunning Context & framing
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| Run The News | Josh Kerr Shatters 27 Year Old Mile World Record | 20 Jul 2026 | 01:14:16 | |
Josh Kerr shattered the mile World Record, running 3:42.66. Everett Smulders has run 3:58 in the mile, and follows the sport closely, so he joined me to discuss everything surrounding this historic day. We dive into what made this such a mainstream attention grabber, what made it stand out from similar accomplishments, and a variety of other topics. Everett: wesflytrained.club/apply? I IG: @coachsmulders Episode Sponsors:
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| Run The News | Backyard Ultra Records Disqualified at the Biotropica Backyard Ultra | 17 Jul 2026 | 01:02:32 | |
There was recently some controversy at the Biotropica Backyard Ultra where both the men's and women's world bests were broken. After the event concluded, it was revealed that some violations occurred, causing all results from the event to be disqualified, including the top performances. Mark Dowdle joined me to discuss what happened, along with other related topics around rules in the sport of ultra marathon. Mark Dowdle: IG @mark.dowdle | YT @mark.dowdle Episode Sponsors:
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| Episode 494: Developing As An Ultramarathon Runner | Lotti Brinks | 13 Jul 2026 | 01:02:47 | |
Lotti Brinks is a rising star in the sport of trail ultramarathon. She has improved year over year, which recently resulted in finishing 5th at the 2026 WSER 100. She joins the show to discuss history with the sport of running, introduction to the sport of ultramarathon, becoming a professional athlete with Hoka, the growing trend of race day optimization with team training camps, and how she has shaped her mindset to stay balanced in life outside of being a professional runner. Lotti Brinks: @lotti_brinks | https://www.strava.com/pros/25210246 Episode Sponsors:
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| Episode 493: Comrades Champion | George Kusche | 05 Jul 2026 | 00:49:46 | |
The Comrades Marathon is one of the most competitive ultramarathons on the planet. The 99th running of the historic point to point course recently saw both the men's and women's course records go down. George Kusche was the men's and overall winner with a time of 5 hours 15 minutes 56 seconds over the 85.77 km net uphill course. George Kusche: @kuschegeorge Episode Sponsors:
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| Run The News | Did WSER 100 Highlight A Missed Pacing Advantage? | 29 Jun 2026 | 00:41:29 | |
WSER 100 2026 was defined by large improvements in finishing times across both the men's and women's top finishers. What does the historically cooler temps help tell us about the next big performance boosting strategy for ultramarathon races? Nick Coury joins me to discuss the pacing variable that may still yield big improvements at races like WSER 100. Episode Sponsors:
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| Run The News | Downhill Treadmill & Heat Training | 26 Jun 2026 | 00:14:13 | |
Some eye catching training techniques have recently been highlighted in the running world. These included what appears to be an excessive degree weighted downhill treadmill work, and heat train maxxing. I give some thoughts on both, and what they mean for the average runner. Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 492: My Blood Clot Diagnosis | 24 Jun 2026 | 00:18:48 | |
I was recently diagnosed with deep vein thrombosis (DVT) or a blood clot. I was traveling for a race when symptoms presented. This is a timeline of the events that led to me getting checked and confirmed. DVT is a situation where if you don't act soon, it can get very bad. Getting checked when symptoms present is very important, and I hope to highlight that with my story.
Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) True Nutrition: truenutrition.com/hpo Code: HPO (20% Off)
Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Run The News | Enhanced Games Failure? Fuel Abundance Signaling, Comrades Marathon | 15 Jun 2026 | 00:24:36 | |
On paper, the Enhanced Games was a massive failure, but was success the real goal or something bigger? Hyper carb fueling strategies are all the rage right now, but is there more to this approach than gut training on race day? The Comrades Marathon produced course records on both the men's and women's side of the event. Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 491: The Art Of Ultrarunning | Ian Sharman | 12 Jun 2026 | 01:17:50 | |
Ian Sharman is a legend in the ultramarathon space, finishing top ten at WSER 100 nine times, four wins at Leadville 100 mile, and a wealth of knowledge with respect to training theory and the variables that make for successful ultramarathon results. Ian recently published a book, "Art of Ultrarunning: Tried & Tested Strategies for Long-Distance Runners." We spent some time covering what he has learned throughout his career as an athlete and coach. Ian: sharmanultra.com | IG: @sharmanian | X: @sharmanian Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) True Nutrition: truenutrition.com/hpo Code: HPO (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 490: Multiday Ultramarathon Performance Insights | Kevin Goldberg | 05 Jun 2026 | 01:28:33 | |
Multiday Ultramarathons are growing in popularity, but offer a high bar to be successful. Kevin Goldberg is the host of the "Distance To Empty Podcast" where they dive into the specific variables surrounding multiday ultras. We discussed what he has learned from experts along the way, as well his own participation in this style of ultramarathon. Kevin: https://linktr.ee/distancetoemptypod | IG: @distancetoemptypod Episode Sponsors:
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| Episode 489: Walmsley Deserves WSER Entry & Policing Non-Professionals | Brian Peterson | 29 May 2026 | 01:07:52 | |
Brian Peterson (Wolfie's World) joined me to discuss Jim Walmsley's entry into WSER through sponsor spot, and what to make of all the discussion around policing non-professional runners in sport. Brian: @wolffrunner | Wolfies World Podcast Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Support HPO: Website: https://zachbitter.com/hpo Patreon: https://patreon.com/HPOpodcast Coaching: https://zachbitter.com/coaching Zach's Newsletter: https://substack.com/@zachbitter
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| Episode 488: Ultramarathon Problem Solving | Kilian Korth | 22 May 2026 | 01:30:13 | |
Kilian Korth finally cracked the code for a successful race at Cocodona 250 on his forth attempt. It didn't come without challenges and unpredictable hurdles to clear. Kilian is one of the best problem solvers in the sport. We discuss his approach, problem solving, and what makes Cocodona and multiday events so appealing in the modern ultramarathon era. Kilian: IG @runtoughmindset | Substack: https://runtoughmindset.substack.com/about | Kilian Korth x Creerpers Socks Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Run The News | Is Fair Sport Fantasy? | 19 May 2026 | 00:16:58 | |
Recently, Sage Canaday called into question Cameron Hanes participation in running events by pointing out some of the products he has openly discussed using. The topic raises questions about what the best process is for maintaining clean sport. I discuss what I believe both of their broader points include, and potential options to minimize the divide. Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 487: Rachel Entrekin | Cocodona 250 Course Record | 14 May 2026 | 01:10:00 | |
Rachel Entrekin recently cemented her legacy in the growth of multiday trail ultramarathons with her outright course record and third win at the Cocodona 250. We talk about how her race played out, her life has changed since going pro earlier this year, and what her performance has taught us about the many variables to success at multiday ultramarathons. For a full picture of Rachel's transition into professional ultra runner, please check out my previous episode with her, Episode 477: Cocodona 250 Ultra Champ | Rachel Entrekin Rachel: rachelentrekin.substack.com | IG: @rachel__entrekin Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Run The News | Cocodona 250 Leveled Up | 11 May 2026 | 00:23:24 | |
Cocodona 250 Mile had all the ingredients to go viral beyond the world of running. I dive into the variables that led to it, what we are learning around the weight of certain performance variables like running ability and durability, and why the event has a polarizing aspect to it. Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 486: Inside The Pro Running World | Jacob Thomson | 08 May 2026 | 01:11:10 | |
Jacob Thomson is a professional marathon runner for Under Armour. He recently raced Boston in a time of 2 hours 9 minutes 51 seconds. He co-hosts the Out and Back Podcast with Rory Linkletter. We discuss elite training, innovative shoe tech, the role of high in race carb fueling, doping influence on professional sports, and how to navigate the world of influence and sponsorship in running's modern era. Jacob: thomsontraining.run | IG: @jtcougars8 | YT: @jacobthomson4360 Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Run The News | Super Shoes, Carbs, & Doping | 04 May 2026 | 00:26:48 | |
Super shoes, extreme in race carb consumption, and doping was a big topic in the running news the past week. We saw both Sebastian Sawe and Yomif Kejelcha go under 2 hours for the first time in a sanctioned event. Much of the conversation around these performances were centered around innovations in shoe technology, carbohydrate fueling strategies, and doping suspicion.
Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off)
Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 485: Long Term Running Improvement | Brant Stachel | 01 May 2026 | 01:30:30 | |
Brant Stachel guides high performing athletes and individuals to reach their goals. Brant has worked with elite athletes representing Canada and the United States, including Olympians and international competitors. Brant has been working with Thomas Nobbs who has continually progressed towards a 2:09 marathon and win at the McKirdy MicroOTQ Marathon. Brant: runfastandfree.com | IG: @brant_stachel Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER free bluetooth fan ($319 value) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 484: Influencers v. Athletes | Tommy Lewis | 24 Apr 2026 | 01:32:26 | |
Tommy Lewis hosts the podcast, That's Runnable, and is a content creator with a passion to introduce people to running. He joined the show to discuss the role influencers and athletes play in growing the sport of running, where conflicts arise, and what he believes the path forward is for these two influential groups. Tommy: thatsrunnable.com | IG: @tommyrunpt Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 483: Arizona Monster 300 Course Record | Mike McKnight | 17 Apr 2026 | 01:17:29 | |
Mike McKnight is an ultramarathon athlete, coach, and former Triple Crown of 200s record holder. He is a trailblazer for 200+ mile trail events, and on a mission this year to win as many as possible. He recently won and set the course record at the Arizona 300 Mile, and has his sights on Cocodona 250, Tahoe 200, Hardrock 100, Bigfoot 200, and Moab 240 this year. Mike: greatwesternadventures.com | IG: @mikejmcknight Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) Podcast Details: HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 482: What Performance Fueling Shows Us | Dr. James DiNicolantonio | 06 Apr 2026 | 01:06:54 | |
Dr. James DiNicolantonio is a cardiovascular research scientist and Doctor of Pharmacy and has worked with professional athletes across sports. We cover the topic of fueling sport, and what to make of the extremes often discussed online. James: drjamesdinic.com | IG: @drjamesdinic | X: @drjamesdinic | YouTube: @dr.jamesdinicolantonio2215 Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) Podcast Details: Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 481: Multi-day & Backyard Ultras | Mark Dowdle | 30 Mar 2026 | 01:30:51 | |
Mark Dowdle specializes in long multi-day and backyard ultramarathons. He shares his experience coming from a non-running background. We discuss what makes multi-day ultras and backyard ultras unique and how the variables impacting performance shift compared to shorter ultras and endurance events. Mark Dowdle: www.mark-dowdle.com | IG: @mark.dowdle | YT: @mark.dowdle Episode Sponsors: LMNT: https://drinkLMNT.com/HPO (free sample pack with purchase) deltaG: https://deltagketones.com Code: BITTER20 (20% Off) ProBio: https://www.probionutrition.com/endurance Code: Endurance (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Endurance Training Simplified Series: https://zachbitter.com/endurance-training-series Support HPO: Website: https://zachbitter.com/hpo Patreon: https://patreon.com/HPOpodcast Coaching: https://zachbitter.com/coaching Zach's Newsletter: https://substack.com/@zachbitter
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| Episode 480: Has Endurance Fueling Bonked? | 23 Mar 2026 | 00:30:12 | |
For this episode, I dive into some of the extremes we often see with respect to fueling strategies in endurance sports, both on the high and low end of carbohydrate consumption, and what we can make of it all. Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) | |||
| Episode 479: Is Low Carb Performance Misplaced? | Jonah Rosner | 13 Mar 2026 | 01:14:25 | |
Jonah Rosner is a sport scientist, performance coach, and the founder of Marathon Science, a platform dedicated to translating cutting-edge endurance research into practical insights for runners and hybrid athletes. Jonah previously worked in the NFL and now focuses on helping endurance athletes train smarter through evidence-based training, nutrition, and performance strategies.
Free resources for audience from Jonah 1. The Gel Cheat Sheet - breaks down race-day fueling strategy, gel timing, and the carbohydrate recommendations we discussed. Exactly the kind of practical takeaway your audience can use immediately. https://marathonscience.beehiiv.com/new-gel-guide 2. The Foot and Calf Strength Plan - a free gym program targeting the musculature below the knee that we touched on when talking about BFR and neuromuscular durability for endurance athletes. Covers calf raises, single-leg work, and progressive loading. https://marathonscience.beehiiv.com/foot-calf-strength-guide-new Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial)
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| Episode 478: 100 Mile Record Redemption | Raj Pannu | 06 Mar 2026 | 01:00:11 | |
Raj Pannu recently won and set the course record at the USATF 100 Mile National Championships. Raj was determined for redemption this year after being DQ'd last year due to his shoes not meeting USATF guidelines. In this episode, we discuss his trajectory through the 100 mile distance and steady improvements over the years. Raj: @lightningraj Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 477: Cocodona 250 Ultra Champ | Rachel Entrekin | 27 Feb 2026 | 01:23:03 | |
Rachel Entrekin is a 2x Cocodona Champion, and course record holder. She joined me for an in-depth interview discussing her transition to professional running, training methods, multi-day race strategy, and the evolution of ultrarunning. Rachel: rachelentrekin.substack.com | IG: @rachel__entrekin Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 476: Carbohydrate Fueling Strategies For Runners | Claire Shorenstein | 20 Feb 2026 | 01:29:44 | |
High carb fueling has been gaining momentum over the past few years. Claire Shorenstein shares some things to consider around this process to make it more sustainable and long lasting. Claire is a sports dietitian who hosts Eat for Endurance. She is a Board-Certified Sports Dietitian (MS RD CSSD) with over a decade of experience helping active people achieve their nutrition, health, and fitness goals. I'm also a longtime endurance athlete, with a passion for trail and ultra running. Claire: eatforendurance.com | IG: @eatforendurance Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 475: Are Multiday Ultramarathons Soft? | 16 Feb 2026 | 00:32:25 | |
The sport of ultramarathon is growing! With that, we have much more exposure to the wide range of events that fall within the ultra category. With growth, we see increased competitive pressure, but not always in a uniform manner. Let's discuss what this means for the different disciplines within ultramarathon, and what we will likely see in the coming years. Endurance Training Simplified Series Episode Sponsors: ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 474: 3:58 Mile to Ultra | Everett Smulders | 06 Feb 2026 | 02:14:27 | |
Everett Smulders is an American distance runner, coach, and entrepreneur. He became an NCAA All-American and achieved a personal best of 3:58.93 in the indoor mile (2021), going sub-4:00, along with strong marks like 1:48.31 in the 800m and 3:42.86 in the 1500m. After college, he transitioned into ultra running and endurance events. He is the founder and CEO of WesFly Athletics (or WesFly Training Systems), a running media and coaching brand. Everett: wesflytrained.club/apply? I IG: @coachsmulders Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: https://bit.ly/4bN041t Code HPOPOD (free 14-day trial) Wahoo KICKR Run: wahoofitness.com Code: OUTLIER (free HR monitor with purchase) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 473: The Trial of Miles Chasing Olympic Trials Marathon Peter Bromka | 30 Jan 2026 | 01:51:21 | |
Peter Bromka is a 2:19 marathoner, acclaimed writer, and passionate voice in the running community. Peter transformed his marathon debut from 3:07 to 2:19, coming agonizingly close to the U.S. Olympic Trials qualifying standard. Peter co-hosts the podcast, Road to the Olympic Trails, where collaborates with Lindsey Hein and Matt Chittim to uncover the stories behind the Olympic Marathon Trial Qualifiers. Peter: peterbromka.com I IG: @bromka | X: @bromka Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 472: Brad Stulberg The Pursuit of Excellence | 26 Jan 2026 | 01:02:22 | |
Brad Stulberg researches, writes, and coaches on health, well-being, and sustainable excellence. He is the bestselling author of The Practice of Groundedness and co-author of Peak Performance. Stulberg regularly contributes to the New York Times, and his work has been featured in the Wall Street Journal, Washington Post, Los Angeles Times, The New Yorker, Sports Illustrated, Outside Magazine, Forbes, and other outlets. He also serves as the co-host of The Growth Equation podcast and is on faculty at the University of Michigan's Graduate School of Public Health. In his coaching practice, he works with executives, entrepreneurs, physicians, and athletes on their mental skills and overall well-being. He lives in Asheville, North Carolina. Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter Brad: bradstulberg.com - IG: @bradstulberg - X: @BStulberg | |||
| Episode 471: Rory Linkletter | Sub-60 Half Marathon & Marathon Training Evolution | 16 Jan 2026 | 00:58:25 | |
Elite marathoner Rory Linkletter discusses his historic sub-60 half marathon at Houston, training philosophy changes, and preparation for upcoming races. Rory is coming off a big year, where he placed sixth at Boston in 2:07:02, second at Ottawa in 2:08:31 (winner recently provisionally suspended for doping), ninth at Chicago in 2:06:49. Rory: World Athletics Profile - IG: @rory_linkletter - X: @ThePapaLinks YT: @LinkletterRory Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 470: Strength for Endurance | Jason Fitzgerald | 09 Jan 2026 | 01:17:50 | |
Jason Fitzgerald is a life long runner, and host of The Strength Running Podcast. In this episode, we discuss if Truett Hanes can reach the Olympic Trials Marathon Qualifying time of 2:16, the increase in strength athletes embracing running, the role of strength in running, and the rise in popularity of muscular endurance and fatigue resistance training strategies. Find Jason: strengthrunning.com | IG: @jasonfitz1 | X: @JasonFitz1 Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter | |||
| Episode 469: Failures & Success: Assessing a Training Cycle & Future Planning | 31 Dec 2025 | 00:31:11 | |
I ended the year with a race where I didn't meet expectations. These types of experiences offer opportunities about what should be kept, versus what will likely lead to the same mistakes. For this episode, I highlight how I assess a training cycle to tease out the positives and the learning opportunities. Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) CurraNZ: www.curranzusa.com – code: BITTER20DEAL Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 468: Desert Solstice | Chasing Fast 100 Milers | 17 Dec 2025 | 00:42:28 | |
In this episode, I reflect on my build into this year's Desert Solstice Track Invitational where I plan to target a fast 100 miler and 12 Hour ultramarathon. Included, my history with this event, how things went leading into it, how I structured my training, and my strategy around nutrition, hydration, pacing, and cooling for the event. Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) CurraNZ: www.curranzusa.com – code: BITTER20DEAL Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 467: Cooling, Hydration, & Fueling for Peak Performance | Jeff Mogavero | 10 Dec 2025 | 01:04:44 | |
In this episode, Jeff Mogavero joins the podcast to discuss his exciting year in trail and ultra running, including his impressive second-place finish at Javelina (2024), notable performances at Canyons and Western States, and a nail-biting win at Ultra Trail Cape Town. Jeff dives into the specifics behind these successes, highlighting the impact of fine tuning his hydration strategy. The conversation also explores Jeff's unique approach to cooling during hot races, his thoughts on nutrition and fueling, and his plans to tackle races like Western States and UTMB in the future. Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter Find Jeff: jeffmogavero.substack.com | IG: @jeffmogavero | Strava: Jeff Mogavero | |||
| Episode 466: Running Starter Pack | 03 Dec 2025 | 00:39:56 | |
For this episode, I dive into some of the fundamental elements to structuring a running program in a sustainable way. This guide is helpful for beginners and runners looking to best organize their current training. Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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| Episode 465: Leadville 100 CR & 50 Mile World Record | Anne Flower | 21 Nov 2025 | 00:55:01 | |
Anne Flower burst onto the ultramarathon scene this year by breaking the long standing Leadville 100 Mile Course Record of 31 years at her debut 100 mile race. She turned things around quickly for a very different experience by breaking the 50 Mile World Record at the Tunnel Hill 100/50 three months later. Anne trains and races while maintaining a career as an ER Doctor. Anne: Mountains to Mountains - IG: @_flowpow_ Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Training Peaks: trainingpeaks.com/hpopodcast (free 14-day trial) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach's Coaching: zachbitter.com/coaching Zach's Journal: substack.com/@zachbitter Find Zach: zachbitter.com | IG: @zachbitter | X: @zbitter | FB: Zach Bitter | Strava: Zach Bitter
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