Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50k to 100 Miles and Beyond by Hal Koerner, Hal Koerner, Scott Jurek

Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50k to 100 Miles and Beyond

Hal Koerner, Hal Koerner, Scott Jurek

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Ultramarathons don't leave much room for mistakes. Don't learn the hard get a jump on training for an ultramarathon with Hal Koerner's Field Guide to Ultrarunning , a comprehensive handbook to running 30 to 100 miles and beyond, written by one of ...

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