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WATCH: Zach Bitter Talks Training, Nutrition and Motivation

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Zach Bitter was not a standout athlete in college. But after graduation he found his way to ultra running, and quickly rose to the top of the field.

In 2015, he ran the 100-mile event at the Desert Solstice Track Invitational. His finishing time of 11:40:55 broke the standing American 100-mile record.

This video explores his path from the track to the trails, and how he stays fueled and focused.