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

Ultramarathon Man: Confessions of an All-Night Runner

Run!: 26.2 Stories of Blisters and Bliss

The Road to Sparta: Reliving the Ancient Battle and Epic Run That Inspired the World's Greatest Footrace

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

Eat and Run: My Unlikely Journey to Ultramarathon Greatness

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

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

Training Essentials for Ultrarunning: How to Train Smarter, Race Faster, and Maximize Your Ultramarathon Performance

Born to Run

Natural Born Heroes: Mastering the Lost Secrets of Strength and Endurance