Eat & Run: My Unlikely Journey to Ultramarathon Greatness

North: Finding My Way While Running the Appalachian Trail

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

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

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

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

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

The Whartons' Stretch Book: Featuring the Breakthrough Method of Active-Isolated Stretching

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

Relentless Forward Progress: A Guide to Running Ultramarathons

Reborn on the Run: My Journey from Addiction to Ultramarathons