Running Man: A Memoir of Ultra-Endurance

Nowhere Near First: Ultramarathon Adventures From The Back Of The Pack

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

Ultramarathon Man: Confessions of an All-Night Runner

Feet in the Clouds: A Tale of Fell-Running and Obsession

Mud, Sweat and Tears: An Irish Woman's Journey of Self-Discovery

Running Your First Ultra: Customizable Training Plans for Your First 50K to 100-mile Race

Running Beyond: Epic Ultra, Trail and Skyrunning Races

Out There: A Story of Ultra Recovery

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

Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen