Zach Bitter is an endurance athlete, ultramarathon runner and coach. He recently broke 2 world records in running: 100-mile (11:19:18) & the 12-Hour record (104.88 miles).
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Zach Bitter is an endurance athlete, ultramarathon runner and coach. He recently broke 2 world records in running: 100-mile (11:19:18) & the 12-Hour record (104.88 miles).
Source