
Show overview
Human Performance Outliers Podcast with Zach Bitter has been publishing since 2018, and across the 8 years since has built a catalogue of 497 episodes. That works out to roughly 610 hours of audio in total. Releases follow a weekly cadence.
Episodes typically run an hour to ninety minutes — most land between 1h and 1h 29m — though episode length varies meaningfully from one episode to the next. It is catalogued as a EN-language Sports show.
The show is actively publishing — the most recent episode landed 2 days ago, with 19 episodes already out so far this year. The busiest year was 2019, with 116 episodes published. Published by Zach Bitter.
From the publisher
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.
Latest Episodes
View all 497 episodesRun The News | Cocodona 250 Leveled Up
Episode 486: Inside The Pro Running World | Jacob Thomson
Run The News | Super Shoes, Carbs, & Doping
Episode 485: Long Term Running Improvement | Brant Stachel
Episode 484: Influencers v. Athletes | Tommy Lewis
Episode 483: Arizona Monster 300 Course Record | Mike McKnight
Episode 482: What Performance Fueling Shows Us | Dr. James DiNicolantonio
Ep 481Episode 481: Multi-day & Backyard Ultras | Mark Dowdle
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
Ep 480Episode 480: Has Endurance Fueling Bonked?
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)
Ep 479Episode 479: Is Low Carb Performance Misplaced? | Jonah Rosner
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)
Ep 478Episode 478: 100 Mile Record Redemption | Raj Pannu
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
Ep 477Episode 477: Cocodona 250 Ultra Champ | Rachel Entrekin
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
Ep 476Episode 476: Carbohydrate Fueling Strategies For Runners | Claire Shorenstein
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
Ep 475Episode 475: Are Multiday Ultramarathons Soft?
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
Ep 474Episode 474: 3:58 Mile to Ultra | Everett Smulders
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
Ep 473Episode 473: The Trial of Miles Chasing Olympic Trials Marathon Peter Bromka
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
Ep 472Episode 472: Brad Stulberg The Pursuit of Excellence
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
Ep 471Episode 471: Rory Linkletter | Sub-60 Half Marathon & Marathon Training Evolution
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
Ep 470Episode 470: Strength for Endurance | Jason Fitzgerald
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
Ep 469Episode 469: Failures & Success: Assessing a Training Cycle & Future Planning
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