Read more
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.
Episodes
August 24, 2026 • 61 mins
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 135 lack of streaming and interesting shoe policy. Jeff Garmire joins me to discuss and share his upcoming documentary.
Jeff Garmire: freeoutside.com | IG: @thefreeoutside | YT: @Freeoutside
Episode Sponsors:
Listen
Watch
Mark as Played
August 20, 2026 • 89 mins
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 Chinese running shoe market, and his power weight ratio journey.
Matt Fox: sweatelite.co | IG: @mattinglisfox
Episode Sponsors:
-
LMNT: drinkLMNT.com/HPO (fr...
Listen
Watch
Mark as Played
August 13, 2026 • 26 mins
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 for blood clotting. I unpack all of that and share my return to training.
Episode Sponsors:
-
LMNT: drinkLMNT.com/HPO (free sample pack with purchase)
Listen
Watch
Mark as Played
August 7, 2026 • 69 mins
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 intensity. Vic shares typical successful ranges, why hotter races and faster pacing worsen digestion, and emphasizes consistent intake over large boluses that can trigger GI issues. They discuss individualizing targets for mid-pack runners, finding a person...
Listen
Watch
Mark as Played
July 29, 2026 • 115 mins
Kilian Korth joined the show to have a discussion around ultrarunning's growing professionalization without sophisticated regulated drug testing, the limits and trade-offs of WADA/USADA-style regimes, and why "doping" as a blanket term obscures intent and severity. We unpack gray areas such as THC thresholds, TUE complexity for common medications, transparency vs backlash, influencer incentives, and the future pressure...
Listen
Watch
Mark as Played
July 20, 2026 • 74 mins
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 everything surrounding this historic day. We dive into what made this such a mainstream attention grabber, what made it stand out from similar accomplishments, and a variety of other topics.
Listen
Watch
Mark as Played
July 17, 2026 • 62 mins
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 that some violations occurred, causing all results from the event to be disqualified, including the top performances. Mark Dowdle joined me to discuss what happened, along with other related topics around rules in the sport of ultra marathon.
Listen
Watch
Mark as Played
July 13, 2026 • 62 mins
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 joins the show to discuss history with the sport of running, introduction to the sport of ultramarathon, becoming a professional athlete with Hoka, the growing trend of race day optimization with team training camps, and how she has shaped her mindset to stay balanced...
Listen
Watch
Mark as Played
July 5, 2026 • 49 mins
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 women's course records go down. George Kusche was the men's and overall winner with a time of 5 hours 15 minutes 56 seconds over the 85.77 km net uphill course.
George Kusche: @kuschegeorge
Episode Sponsors:
Listen
Watch
Mark as Played
June 29, 2026 • 41 mins
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 about the next big performance boosting strategy for ultramarathon races? Nick Coury joins me to discuss the pacing variable that may still yield big improvements at races like WSER 100.
Episode Sponsors:
Listen
Watch
Mark as Played
June 26, 2026 • 14 mins
Some eye catching training techniques have recently been highlighted in the running world. These inclu...
Listen
Watch
Mark as Played
June 24, 2026 • 18 mins
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 me getting checked and confirmed. DVT is a situation where if you don't act soon, it can get very bad. Getting checked when symptoms present is very important, and I hope to highlight that with my story.
Episode Sponsors:
Read more
Listen
Watch
Mark as Played
June 15, 2026 • 24 mins
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 there more to this approach than gut training on race day? The Comrades Marathon produced course records on both the men's and women's side of the event.
Episode Sponsors:
ProBio: probionutrition.com/endurance Code: Endurance...
Listen
Watch
Mark as Played
June 12, 2026 • 77 mins
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 training theory and the variables that make for successful ultramarathon results. Ian recently published a book, "Art of Ultrarunning: Tried & Tested Strategies for Long-Distance Runners." We spent some time covering what he has learned throughout his career as ...
Listen
Watch
Mark as Played
June 5, 2026 • 88 mins
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 into the specific variables surrounding multiday ultras. We discussed what he has learned from experts along the way, as well his own participation in this style of ultramarathon.
Kevin: https://linktr.ee/distancetoemptypod | IG: @distanceto...
Listen
Watch
Mark as Played
May 29, 2026 • 67 mins
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-professional runners in sport.
Brian: @wolffrunner | Wolfies World Podcast
Episode Sponsors:
ProBio: probionutrition.com/endurance Code: Endura...
Listen
Watch
Mark as Played
May 22, 2026 • 90 mins
Kilian Korth finally cracked the code for a successful race at Cocodona 250 on his forth attempt. It didn't come without challenges and unpredictable hurdles to clear. Kilian is one of the best problem solvers in the sport. We discuss his approach, problem solving, and what makes Cocodona and multiday events so appealing in the modern ultramarathon era.
Kilian: IG @runtoughmindset | Substack: https://runto...
Listen
Watch
Mark as Played
May 19, 2026 • 16 mins
Recently, Sage Canaday called into question Cameron Hanes participation in running events by pointing out some of the products he has openly discussed using. The topic raises questions about what the best process is for maintaining clean sport. I discuss what I believe both of their broader points include, and potential options to minimize the divide.
Episode Sponsors:
ProBio: probionutrition.com/endurance...
Listen
Watch
Mark as Played
May 14, 2026 • 70 mins
Rachel Entrekin recently cemented her legacy in the growth of multiday trail ultramarathons with her outright course record and third win at the Cocodona 250. We talk about how her race played out, her life has changed since going pro earlier this year, and what her performance has taught us about the many variables to success at multiday ultramarathons.
Listen
Watch
Mark as Played
May 11, 2026 • 23 mins
Cocodona 250 Mile had all the ingredients to go viral beyond the world of running. I dive into the variables that led to it, what we are learning around the weight of certain performance variables like running ability and durability, and why the event has a polarizing aspect to it.
Episode Sponsors:
ProBio: probionutrition.com/endurance Code: Endurance (20% Off)
Listen
Watch
Mark as Played
Popular Podcasts
In this intensely divided moment, one of the few things everyone still seems to agree on is Dolly Parton—but why? That simple question leads to a deeply personal, historical, and musical rethinking of one of America’s great icons. Join us for a 9-episode journey into the Dollyverse. Hosted by Jad Abumrad. Produced and reported by Shima Oliaee. Dolly Parton’s America is a production from OSM Audio and WNYC Studios.
If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks, then look no further. Josh and Chuck have you covered.
Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Follow now to get the latest episodes of Dateline NBC completely free, or subscribe to Dateline Premium for ad-free listening and exclusive bonus content: DatelinePremium.com
Betrayal Weekly is back for a new season. Every Thursday, Betrayal Weekly shares first-hand accounts of broken trust, shocking deceptions, and the trail of destruction they leave behind. Hosted by Andrea Gunning, this weekly ongoing series digs into real-life stories of betrayal and the aftermath. From stories of double lives to dark discoveries, these are cautionary tales and accounts of resilience against all odds. From the producers of the critically acclaimed Betrayal series, Betrayal Weekly drops new episodes every Thursday. If you would like to share your story, you can reach out to the Betrayal Team by emailing them at betrayalpod@gmail.com and follow us on Instagram at @betrayalpod and @glasspodcasts. Please join our Substack for additional exclusive content, curated book recommendations, and community discussions. Sign up FREE by clicking this link Beyond Betrayal Substack. Join our community dedicated to truth, resilience, and healing. Your voice matters! Be a part of our Betrayal journey on Substack.
The official podcast of comedian Joe Rogan.