Human Performance Outliers Podcast with Zach Bitter

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 Leadville Trail 100 — on his f

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 project targeting yards/hours. Me

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 public strava profile shows how he

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 competition management. Trent i

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 ultra running events? Badwater 1

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 with content creation, the Chi

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 information about my personal risk fo

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, especially under heat and high inten

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 testing, the limits and trade-off

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 joined me to discuss everythin

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 event concluded, it was revealed

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 at the 2026 WSER 100. She joi

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 recently saw both the men's and

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 historically cooler temps help tell us a

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 degree weighted downhill treadmi

Episode 492: My Blood Clot Diagnosis

I was recently diagnosed with deep vein thrombosis (DVT) or a blood clot. I was traveling for a race when symptoms presented. This is a timeline of the events that led to

Run The News | Enhanced Games Failure? Fuel Abundance Signaling, Comrades Marathon

On paper, the Enhanced Games was a massive failure, but was success the real goal or something bigger? Hyper carb fueling strategies are all the rage right now, but is th

Episode 491: The Art Of Ultrarunning | Ian Sharman

Ian Sharman is a legend in the ultramarathon space, finishing top ten at WSER 100 nine times, four wins at Leadville 100 mile, and a wealth of knowledge with respect to t

Episode 490: Multiday Ultramarathon Performance Insights | Kevin Goldberg

Multiday Ultramarathons are growing in popularity, but offer a high bar to be successful. Kevin Goldberg is the host of the "Distance To Empty Podcast" where they dive in

Episode 489: Walmsley Deserves WSER Entry & Policing Non-Professionals | Brian Peterson

Brian Peterson (Wolfie's World) joined me to discuss Jim Walmsley's entry into WSER through sponsor spot, and what to make of all the discussion around policing non-profe