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PODCAST

Human Performance Outliers Podcast with Zach Bitter

Welcome to the Human Performance Outliers Podcast. Your host Zach Bitter, will take you through a series of interesting topics around health, fitness, endurance, running, hybrid athlete training, ultramarathon, and nutrition. Join in for interviews with folks exploring their outer limits and research in a wide variety of sports, fitness, and nutrition.

sports running

All Episodes

02:14:27

Episode 474: 3:58 Mile to Ultra | Everett Smulders

Human Performance Outliers Podcast with Zach Bitter ·

2026/02/06

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

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01:51:21

Episode 473: The Trial of Miles Chasing Olympic...

Human Performance Outliers Podcast with Zach Bitter ·

2026/01/30

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:

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01:02:22

Episode 472: Brad Stulberg The Pursuit of Excellence

Human Performance Outliers Podcast with Zach Bitter ·

2026/01/26

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

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58:25

Episode 471: Rory Linkletter | Sub-60 Half Marathon &...

Human Performance Outliers Podcast with Zach Bitter ·

2026/01/16

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:

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01:17:50

Episode 470: Strength for Endurance | Jason Fitzgerald

Human Performance Outliers Podcast with Zach Bitter ·

2026/01/09

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:

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31:11

Episode 469: Failures & Success: Assessing a Training...

Human Performance Outliers Podcast with Zach Bitter ·

2025/12/31

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:

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42:28

Episode 468: Desert Solstice | Chasing Fast 100 Milers

Human Performance Outliers Podcast with Zach Bitter ·

2025/12/17

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)

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01:04:44

Episode 467: Cooling, Hydration, & Fueling for Peak...

Human Performance Outliers Podcast with Zach Bitter ·

2025/12/10

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

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39:56

Episode 466: Running Starter Pack

Human Performance Outliers Podcast with Zach Bitter ·

2025/12/03

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:

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55:01

Episode 465: Leadville 100 CR & 50 Mile World Record...

Human Performance Outliers Podcast with Zach Bitter ·

2025/11/21

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:

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01:04:46

Episode 464: 100 Mile World Record | Caitriona Jennings

Human Performance Outliers Podcast with Zach Bitter ·

2025/11/13

Caitriona Jennings, an Irish long-distance and ultra-distance runner has had a distinguished career spanning marathons, ultras, and international competition. She represented Ireland at the 2012 London Olympics and has set multiple national and world records, particularly in ultra distances. She recently broke the Women's 100 Mile World Record at Tunnel Hill 100 Mile, where she finished in a time of 12:37:04 in her debut at the distance. Caitriona: caitrionajennings.com - IG: @jenningscaitriona

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38:35

Episode 463: Fifth 100 Miler Under 12 Hours

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/31

For this episode, I unpack my race at the Equalizer Endurance Run 12 Hour, where I split 11 hours 48 minutes 25 seconds for 100 miles. I share what went into the thought process leading in, how I navigated the day, and dive into my high carb fueling strategy. 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:

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01:29:26

Episode 462: Kilian Korth | The Rise of 200 Milers

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/27

Kilian Korth recently won the Triple Crown of 200s, which is a three race series, including Tahoe 200, Big Foot 200, and Moab 240. He not only won the series, but all three of these 200+ mile races outright. We dive into many of the topics around the rise of these multi-day ultras. Kilian: IG @runtoughmindset | Substack: https://runtoughmindset.substack.com/about Endurance Training Simplified Series ProBio: probionutrition.com/endurance Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample

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01:14:54

Episode 461: How Running Fuels Nicholas Thompson's...

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/22

Nicholas Thompson is the CEO of the Atlantic and an avid runner. He holds the American 50 KM record (age 45–49): In 2021, Thompson set an American record for his age group in the 50K (31 miles), finishing in 3:04:36. Nicholas Thompson: nicholasthompson.com | IG: @nxthompson | X: @nxthompson 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)

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46:33

Episode 460: Optimizing Energy and Micronutrition |...

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/15

In this episode of the Human Performance Outliers Podcast, Zach Bitter is joined by performance nutritionist Dr. Marc Bubbs to discuss the intricacies of optimizing energy through nutrition. Dr. Marc Bubbs is a Performance Nutritionist, author, speaker and consultant for a portfolio of professional and Olympic athletes and Fortune 100 companies. He is also the co-founder of ProBio Nutrition. They cover various key topics including the importance of magnesium, its intake, absorption, and how

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29:03

Episode 459: High Carb & Training Recap

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/08

This episode outlines how my high carb experiment has been going after 14-weeks, and as I transitioned into my 100 mile specific peaking phase of training. Endurance Training Simplified Series ProBio: probionutrition.com 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 Support HPO: zachbitter.com/hposponsors HPO Website: zachbitter.com/hpo Zach’s Coaching:

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51:07

Episode 458: Recovery Optimization | Dr. Marc Bubbs

Human Performance Outliers Podcast with Zach Bitter ·

2025/10/01

Dr. Marc Bubbs is a Performance Nutritionist, author, speaker and consultant for a portfolio of professional and Olympic athletes and Fortune 100 companies. He is also the co-founder of ProBio Nutrition. In this episode, we dive deep into recovery and what to consider when training. Part one of this series is episode 456 where we cover gut health. Endurance Training Simplified Series ProBio: probionutrition.com Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free sample pack with purchase)

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01:05:27

Episode 457: David Roche | King of the Carbs

Human Performance Outliers Podcast with Zach Bitter ·

2025/09/25

David Roche is an elite ultramarathon athlete, and coach. He recently rebroke his own course record at the Leadville 100 Mile. David has been a big advocate for not just high carbohydrate consumption, but has challenged the limitations of very high in race carbohydrate consumption and what it can do for performance. David: swaprunning.com | IG: @mountainroche | X: @MountainRoche Endurance Training Simplified Series ProBio: probionutrition.com Code: Endurance (20% Off) LMNT: drinkLMNT.com/HPO (free

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01:01:51

Episode 456: Gut Health | Dr. Marc Bubbs

Human Performance Outliers Podcast with Zach Bitter ·

2025/09/19

Dr. Marc Bubbs is a Performance Nutritionist, author, speaker and consultant for a portfolio of professional and Olympic athletes and Fortune 100 companies. He is also the co-founder of ProBio Nutrition. Dr. Bubbs previously came on the show for episodes 113 & 275. Dr. Marc Bubbs: drbubbs.com | IG: @drbubbs | X: @drbubbs Endurance Training Simplified Series LMNT: drinkLMNT.com/HPO (free sample pack with purchase) deltaG: deltagketones.com Code: BITTER20 (20% Off) CurraNZ: curranzusa.com Code:

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51:37

Episode 455: Keira D'Amato | Don't Call It A Comeback

Human Performance Outliers Podcast with Zach Bitter ·

2025/09/10

Keira D'Amato had a promising future in running in high school and college, before stepping away for 8-years. When she returned to running, professional trajectory was not on her radar. She found new motivations and identity with running being part of her story, which lead to breaking American Records in the Full and Half Marathon. Her book, "Don't Call It A Comeback," is a great example of how success and fulfillment comes in many paths. Keira D'Amato: keiradamato.com | IG: @keiradamato I Strava:

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