Zach Bitter Endurance
I have been training and racing endurance events for over 25 years. Professionally, I compete in ultramarathons, coach, and host the Human Performance Outliers Podcast. On here, I write about topics and questions I have received over the years.
- Indexed issues, last 90 days
- 14
- Latest publication
- Sep 25, 2026
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- Earliest in this view
- Aug 25, 2026
Latest issues
Episode 503: Last Soul Ultra Steals The Show | Kim Gottwald (opens the original)
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Kim Gottwald is a German ultra runner and content creator who went from law student to backyard-ultra standout by documenting extreme projects in public, including a co-win at Go One More in Texas, and a 449 km Last Soul Ultra victory at home. He co-founded the running brand Rappid, became BPN’s first German athlete, and now hosts Germany’s Last Soul Ultra. He has big plans for expanding Last Soul Ultra into multiple locations, including the US.Leave a comment<p cl
Episode 503: Last Soul Ultra Steals The Show | Kim Gottwald (opens the original)
Read excerpt
Kim Gottwald is a German ultra runner and content creator who went from law student to backyard-ultra standout by documenting extreme projects in public, including a co-win at Go One More in Texas, and a 449 km Last Soul Ultra victory at home. He co-founded the running brand Rappid, became BPN’s first German athlete, and now hosts Germany’s Last Soul Ul… Read more
Episode 502: Backyard Ultra Records & Recovery | Phil Gore (opens the original)
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Phil Gore holds the World Best mark for the Backyard format, completing 119 “yards” for a total of 495.83miles. He recently completed a personal project, called Project 168, where he aimed to see if he would be able to last 168 yards (700 miles). He ended up tapping out at 152 yards (633.75 miles). We discussed this project, what the limiters were, how they have created a longer recovery, and what direction the Backyard Ultra World is going, and how his event raised nearly $300,000 for Telethon,
Episode 502: Backyard Ultra Records & Recovery | Phil Gore (opens the original)
Read excerpt
Phil Gore holds the World Best mark for the Backyard format, completing 119 “yards” for a total of 495.83miles. He recently completed a personal project, called Project 168, where he aimed to see if he would be able to last 168 yards (700 miles). He ended up tapping out at 152 yards (633.75 miles). We discussed this project, what the limiters were, how … Read more
Episode 501: First Double Amputee To Finish Leadville 100 Mile Run | Brian Reynolds (opens the original)
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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 fourth try, in 28 hours 55 minutes. He lost both legs at age four to meningococcemia, a rare bacterial infection with grim survival odds. For years he hid the amputation and stayed off the trails. A Grand Canyon hike cracked that open. He went from powerlifting to a 2:58 marathon, multiple classification records from 5K to the ma
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