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Human Performance Outliers Podcast

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, and nutrition. Join in for interviews w...

Episodes

20 of 525 episodes

Episode 504: My 100 Mile PR - Why I Will Break It

I will be taking a big swing at Desert Solstice Track Invitational on December 19th where I plan to establish a new 100 mile personal best....

33:52Oct 19, 2026

Run The News | Moab 240 Cancellation & Chicago Marathon

Allison Mercer joined the show to recap two very different running stories from the past week: the Moab 240 cancellation amid flash flooding...

01:19:05Oct 13, 2026

Run The News | Road Ultras Need Hype & Money In Ultras

Allison Mercer is an ultramarathon athlete who has competed at both 50km and 100km World Championships, Tunnel Hill, and Strolling Jim. She...

01:33:03Oct 6, 2026

Episode 503: Last Soul Ultra Steals The Show | Kim Gottwald

Kim Gottwald is a German ultra runner and content creator who went from law student to backyard-ultra standout by documenting extreme projec...

54:28Sep 25, 2026

Episode 502: Backyard Ultra Records & Recovery | Phil Gore

Phil Gore holds the World Best mark for the Backyard format, completing 119 "yards" for a total of 495.83miles. He recently completed a pers...

01:14:34Sep 22, 2026

Episode 501: First Double Amputee To Finish Leadville 100 Mile Run | Brian Reynolds

Brian Reynolds is a Brooks-sponsored double below-knee amputee runner who, in 2026, became the first athlete in that category to finish the...

01:19:36Sep 10, 2026

Run The News | Phil Gore Shocks Backyard World & Meg Eckert Targets Men's 6-Day American Record

Phil Gore holds the World Best Backyard record with 119 yards (495.87 miles). In an effort to see what he could actually do, he set up a pro...

24:26Sep 7, 2026

Episode 500: The Truth Behind Run Slow To Run Fast | Thomas Nobbs

Thomas Nobbs is a professional marathon athlete with a 2:09 PR, and endurance coach. His progression to 2:09 speaks for itself, and his publ...

01:12:56Sep 3, 2026

Episode 499: REDs & Body Composition | Dr. Trent Stellingwerff

Dr. Trent Stellingwerff joined the show to discuss the topic of relative energy deficiency syndrome (REDs) in endurance athletes, and body c...

01:12:50Aug 28, 2026

Run The News | Mark Dowdle Goes Crazy At Last Soul Ultra

Mark Dowdle arrives 15 minutes before the start of Last Soul Ultra, but still wins with nearly 400 miles. Should we have more unsupported ul...

01:01:14Aug 24, 2026

Episode 498: 2:59 to 2:18 Marathon | Matt Fox - Sweat Elite

Matt Fox joined me to chat about his interest in the marathon after coming from a National class middle distance background, his trajectory...

01:29:16Aug 20, 2026

Episode 497: Blood Clot Defeated & Return To Training

I reached the end of my journey with the blood clot I discovered at the end of June. I learned a lot through the process, along with informa...

26:11Aug 13, 2026

Episode 496: Fueling Your Ultra: Strategies & Challenges | Vic Johnson

Vic Johnson shares the practical limits of high-carb strategies, discusses how carbohydrate needs can exceed what the gut can absorb, especi...

01:09:37Aug 7, 2026

Episode 495: Performance Enhancing Drugs In Ultramarathon | Kilian Korth

Kilian Korth joined the show to have a discussion around ultrarunning's growing professionalization without sophisticated regulated drug tes...

01:55:25Jul 29, 2026

Run The News | Josh Kerr Shatters 27 Year Old Mile World Record

Josh Kerr shattered the mile World Record, running 3:42.66. Everett Smulders has run 3:58 in the mile, and follows the sport closely, so he...

01:14:16Jul 20, 2026

Run The News | Backyard Ultra Records Disqualified at the Biotropica Backyard Ultra

There was recently some controversy at the Biotropica Backyard Ultra where both the men's and women's world bests were broken. After the eve...

01:02:32Jul 17, 2026

Episode 494: Developing As An Ultramarathon Runner | Lotti Brinks

Lotti Brinks is a rising star in the sport of trail ultramarathon. She has improved year over year, which recently resulted in finishing 5th...

01:02:47Jul 13, 2026

Episode 493: Comrades Champion | George Kusche

The Comrades Marathon is one of the most competitive ultramarathons on the planet. The 99th running of the historic point to point course re...

49:46Jul 5, 2026

Run The News | Did WSER 100 Highlight A Missed Pacing Advantage?

WSER 100 2026 was defined by large improvements in finishing times across both the men's and women's top finishers. What does the historical...

41:29Jun 29, 2026

Run The News | Downhill Treadmill & Heat Training

Some eye catching training techniques have recently been highlighted in the running world. These included what appears to be an excessive de...

14:13Jun 26, 2026