• Episode 483: Arizona Monster 300 Course Record | Mike McKnight
    Apr 17 2026

    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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    1 Std. und 17 Min.
  • Episode 482: What Performance Fueling Shows Us | Dr. James DiNicolantonio
    Apr 6 2026

    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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    1 Std. und 7 Min.
  • Episode 481: Multi-day & Backyard Ultras | Mark Dowdle
    Mar 30 2026

    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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    1 Std. und 31 Min.
  • 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 Min.
  • 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 Std. und 14 Min.
  • 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 Std.
  • 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 Std. und 23 Min.
  • 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 Std. und 30 Min.