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

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

Koerner Halamazon.com
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Relentless Forward Progress: A Guide to Running Ultramarathons

Bryon Powell

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Training Essentials for Ultrarunning

Koop Jason

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Born to Run 2: The Ultimate Training Guide

Christopher McDougall

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Scott Jurek Eat and Run: My Unlikely Journey to Ultramarathon Greatness

Christopher McDougall Natural Born Heroes