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

Born to Run: The hidden tribe, the ultra-runners, and the greatest race the world has never seen

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

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

Relentless Forward Progress: A Guide to Running Ultramarathons

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

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

Bushcraft First Aid: A Field Guide to Wilderness Emergency Care

The Plant-Based Athlete: A Game-Changing Approach to Peak Performance

Summary of Danny Dreyer & Katherine Dreyer's ChiRunning

North: Finding My Way While Running the Appalachian Trail

The TB12 Method: How to Achieve a Lifetime of Sustained Peak Performance

Bushcraft 101: A Field Guide to the Art of Wilderness Survival

The First Major: The Inside Story of the 2016 Ryder Cup

Natural Born Heroes: How a Daring Band of Misfits Mastered the Lost Secrets of Strength and Endurance