• Episode 480: Has Endurance Fueling Bonked?
    Mar 23 2026

    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)

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    30 mins
  • Episode 479: Is Low Carb Performance Misplaced? | Jonah Rosner
    Mar 13 2026

    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.


    Jonah: @rosnerperformance | Newsletter: marathonscience.beehiiv.com

    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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    1 hr and 14 mins
  • Episode 478: 100 Mile Record Redemption | Raj Pannu
    Mar 6 2026

    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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    1 hr
  • Episode 477: Cocodona 250 Ultra Champ | Rachel Entrekin
    Feb 27 2026

    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

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    1 hr and 23 mins
  • Episode 476: Carbohydrate Fueling Strategies For Runners | Claire Shorenstein
    Feb 20 2026

    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

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    1 hr and 30 mins
  • Episode 475: Are Multiday Ultramarathons Soft?
    Feb 16 2026

    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

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    32 mins
  • Episode 474: 3:58 Mile to Ultra | Everett Smulders
    Feb 6 2026

    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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    2 hrs and 14 mins
  • Episode 473: The Trial of Miles Chasing Olympic Trials Marathon Peter Bromka
    Jan 30 2026

    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

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    1 hr and 51 mins