Hal Koerner's Field Guide to Ultrarunning: Training for an Ultramarathon, from 50K to 100 Miles and Beyond (Audible Audio Edition): Hal Koerner, Adam W. Chase - contributor, Scott Jurek - foreword, Josh Bloomberg, Tantor Audio: Books
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Product Description
Ultramarathons don't leave much room for mistakes. Don't learn the hard way: Get a jump on training for an ultramarathon with Hal Koerner's Field...
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