50/50: Secrets I Learned Running 50 Marathons in 50 Days -- and How You Too Can Achieve Super Endurance!

Relentless Forward Progress: A Guide to Running Ultramarathons

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

Running Free

Born to Run 2: The Ultimate Training Guide

The Rise of the Ultra Runners: A Journey to the Edge of Human Endurance

Anatomy for Runners: Unlocking Your Athletic Potential for Health, Speed, and Injury Prevention

The Non-Runner's Marathon Trainer

Let Your Mind Run: A Memoir of Thinking My Way to Victory

The New Rules of Marathon and Half-Marathon Nutrition: A Cutting-Edge Plan to Fuel Your Body Beyond "The Wall"

Finding Ultra, Revised and Updated Edition: Rejecting Middle Age, Becoming One of the World's Fittest Men, and Discovering Myself

North: Finding My Way While Running the Appalachian Trail

Endure: Mind, Body and the Curiously Elastic Limits of Human Performance