Human Performance Outliers Podcast with Zach Bitter cover image

Human Performance Outliers Podcast with Zach Bitter

Latest episodes

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Jul 3, 2025 • 37min

Episode 446: WSER 100 - What We Learned

WSER 100 is becoming one of the most recognized and high stakes 100 mile ultramarathons for both professionals and ultramarathon participants. we can learn a lot about how participants are preparing and completing this event. Here are some things to consider from what we learned at the 2025 WSER 100. Heat adaptation and in race management The power of race day expectations The psychology around group and competitive pressure Considerations around varied weather events The role of super shoes on the trails Endurance Training Simplified Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
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Jun 30, 2025 • 1h 34min

Episode 445: Jeff Garmire | Cocodona, Media, & Doping Control in Ultra

Jeff Garmire is a professional ultramarathon athlete, coach, author, podcast host, and one of a very few to have participated in all Cocodona 250 events. Long ultras are not even long for Jeff, as he has also completed some monster through hikes like John Muir Trail, Arizona Trail, Continental Divide and more. He is currently gearing up for an unsupported attempt on the Appalachian Trail in August. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter Jeff: freeoutside.com | IG: @thefreeoutside | YouTube: @JeffGarmire | Podcast: Free Outside Podcast
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Jun 24, 2025 • 1h 34min

Episode 444: WSER 100 | Meghan Canfield: 13 Finishes, 10 top 10

Meghan Canfield has a deep history and love for the WSER 100 Endurance Run, completing it 13 times and finishing in the top 10 on 10 occasions. She has been a long time friend, and big influence on the ultramarathon community. She joined me to discuss why the WSER 100 is unique, her many experiences with this event, as well as growing with the sport. Meghan: zenithcoaches.com/about-us/meghan-canfield - IG: @runningmegleg Endurance Training Simplified Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter 
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Jun 11, 2025 • 24min

Episode 443: Ultra Updates - Cheating in Ultra?

This episode covers some current topics in the ultramarathon world. Topics covered include; big name injuries a result of high volume training and shoes, has ultramarathon growth and access resulted in cheating, Gerda Steyn the Queen of Comrades. Edit: Gerda Steyn has won Comrades 4x: '19, '23, '24, '25 Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter
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May 29, 2025 • 1h 35min

Episode 442: Wild Hunt Conditioning 1100 Mile Project & Rarámuri Tribe

James Pieratt of Wild Hunt Conditioning joined me to catch up before he kicks off his 1,100 mile journey along the West Coast and discuss the famous Rarámuri Tribe's endurance practices and lifestyle. Audio Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Amazon Store: amazon.com/shop/zachbitter Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter  James: wildhuntconditioning.com - IG: @wildhuntconditioning  
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May 23, 2025 • 1h 16min

Episode 441: Cocodona 250 Record Breaking Performance - Dan Green

Dan Green recently won the Cocodona 250 and broke the course record along the way with a time of 58:47:18. Prior, Dan has found success running fast times at the Javelina 100, including breaking 13 hours last year and landing on the podium. Dan Green: IG @danisgreen - YouTube: @BargainBoysMedia Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Amazon Store: amazon.com/shop/zachbitter Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter   
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May 19, 2025 • 1h 28min

Episode 440: 603 Miles in 6-Days | Megan Eckert

Megan Eckert is a World Record holding ultramarathon athlete for Mount to Coast, teacher, and coach. She recently broke the women's 6-Day World Record, by completing 603 miles. She holds the women's Backyard Ultra record with 87 laps for 362 miles, qualified for Team USA's 24-Hour World Championship Team, and much more. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter  Megan: @_megeckert irunfar article: https://www.irunfar.com/megan-eckert-womens-six-day-world-record-2025-interview
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May 13, 2025 • 1h 46min

Episode 439: Ultra Running Success - Alyssa Clark

Alyssa Clark, a professional ultramarathon runner with impressive wins at events like Moab 240, shares her journey from athlete to coach. She opens up about managing ulcerative colitis while fueling for endurance runs, highlighting the importance of personalized nutrition strategies. Their conversation dives into the latest trends in ultraracing, the evolution of race formats, and the significance of balance in off-season training. Alyssa's insights on adapting fueling methods and embracing diverse race experiences offer a fresh perspective on ultra running challenges.
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May 1, 2025 • 1h 39min

Episode 438: Ultra World Records & National Championships - Charlie Lawrence

Charlie competed in D1 Cross Country and Track & Field for the University of Minnesota. He currently holds the World Record for the 50 Mile, 4:48:21 (5:46/mi). He recently won the USATF 50 KM Road Championships in a time of 2:49:01. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Amazon Store: amazon.com/shop/zachbitter Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter Charlie: IG: @lawrence_char - YouTube: youtube.com/@lawrence_char
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Apr 18, 2025 • 1h 14min

Episode 437: Backyard Ultras with Sam Harvey

Sam Harvey is one of the best Backyard Ultra runners in the World. He was part of the legendary push that resulted in three men breaking the World Record at the Big’s Backyard Ultra Championships in 2023. He has a wide range, which he recently showcased by winning the Tarawera 100 mile this year. Endurance Training Simplified Series Zach’s Low Carb Endurance Approach Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) Maui Nui Venison: mauinuivenison.com/bitter CurraNZ: curranzusa.com Code: Bitter20deal (20% Off) Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo  Amazon Store: amazon.com/shop/zachbitter Zach’s Coaching: zachbitter.com/coaching Zach’s Newsletter: substack.com/@zachbitter Find Zach: zachbitter.com - IG: @zachbitter - X/Tw: @zbitter - FB: @zbitterendurance - Strava: Zach Bitter  Sam: samharveyultra.com - IG: @samharvey_cloudlander  

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