Zach Bitter – World Record Breaking Ultramarathon Athlete & Endurance Coach

I am Zach Bitter — ultramarathon world record breaking ultramarathon athlete, four-time national champion, and coach dedicated to helping everyday runners thrive in endurance sports.Key achievements include:

  • Current American Record holder in the 100-mile run (11:19:13)

  • Current American Record holder in the 12-hour run (104.88 miles)

  • Four national championships (50 mile 2x, 100km, and 100 mile)

  • Multiple wins at iconic races including San Diego 100, Javelina 100, and Ice Age 50

  • Five sub-12 hour 100 mile performances

Through personalized coaching, custom training plans, and the Human Performance Outliers Podcast, I share practical strategies drawn from years of high-level competition and continuous experimentation with fueling, recovery, and training methods.