
Advertise on podcast: Human Performance Outliers Podcast with Zach Bitter
Rating
4.8from
This podcast has
492 episodes
Language
EnglishPublisher
Zach BitterExplicit
No
Date created
2018/03/24
Latest episode
2026/04/17
Average duration
73 min.
Release period
8 days
Description
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.
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Check latest episodes from Human Performance Outliers Podcast with Zach Bitter podcast
Arizona Monster 300 Course Record | Mike McKnight
2026/04/17
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
What Performance Fueling Shows Us | Dr. James DiNicolantonio
2026/04/06
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
Multi-day & Backyard Ultras | Mark Dowdle
2026/03/30
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
Has Endurance Fueling Bonked?
2026/03/23
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)
Is Low Carb Performance Misplaced? | Jonah Rosner
2026/03/13
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)
100 Mile Record Redemption | Raj Pannu
2026/03/06
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
Cocodona 250 Ultra Champ | Rachel Entrekin
2026/02/27
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
Carbohydrate Fueling Strategies For Runners | Claire Shorenstein
2026/02/20
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
Are Multiday Ultramarathons Soft?
2026/02/16
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
3:58 Mile to Ultra | Everett Smulders
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
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
The Trial of Miles Chasing Olympic Trials Marathon Peter Bromka
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: 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 Stulberg The Pursuit of Excellence
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 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
Rory Linkletter | Sub-60 Half Marathon & Marathon Training Evolution
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: 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
Strength for Endurance | Jason Fitzgerald
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: 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
Failures & Success: Assessing a Training Cycle & Future Planning
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: 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
Podcast reviews
Read Human Performance Outliers Podcast with Zach Bitter podcast reviews
Catawba King 2025/01/21
Open-minded discussions
Zach covers a wide-range of health, wellness, and running topics. I’m always learning from keeping an open-mind to his and his guest’s opinions, the s...
Praise be to Zach Bitter! 2024/09/11
Insight and passion from one of the best
I’ve been following HPO for a couple years now. While there are a number of great podcasts on running, I can say that HPO has had the most dramatic ef...
jerdmann2 2024/08/27
10/10 recommend
Zach is very entertaining and informative whether it’s a guest interview or deep dive into training philosophy. Highly recommend
Adam B Martin 2024/05/15
Great knowledge and informative
Very informative podcast. I look forward to every new release and what Zach is bringing to the table. One of my favorite listens and what I consider a...
Jcwaller 2024/04/29
Interesting and Informative
Great interviews with thought provoking people. I really liked the interview with Vinny Crispino - Exploring the idea that movement could be the solu...
Kraken253 2023/09/18
Great info for all levels of runners
Im always looking for new running podcasts. This is a great one for tips on training.
Streakwalker 2022/12/10
Nadolsky brothers
I really liked the point counterpoint conversation with the Nadolsky brothers - you make a great moderator
BP Writer 2022/12/05
Consistently Terrific Podcast
Zach is a great host with great guests! Especially loved the episode with Vinnie Crispino who suffered a surfing accident and discusses his journey to...
EricWitmer 2022/08/25
Highly recommend.
Insightful, engaging, and motivating. Love so many of the episodes.
MooreMomentum 2022/07/28
Great!
I have the privilege of sitting down with Zach to talk about having growth mindset in your personal and professional career, and I have nothing but go...
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