Why We Run: A Natural History

Eat and Run: My Unlikely Journey to Ultramarathon Greatness

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

Born to Run

Ultramarathon Man: Confessions of an All-Night Runner

Running with the Mind of Meditation: Lessons for Training Body and Mind

The Science of Running: How to find your limit and train to maximize your performance

Mind of the Raven: Investigations and Adventures with Wolf-Birds

Once a Runner: A Novel

One Wild Bird at a Time: Portraits of Individual Lives

Relentless Forward Progress: A Guide to Running Ultramarathons