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

Eat and Run: My Unlikely Journey to Ultramarathon Greatness

80/20 Running: Run Stronger and Race Faster by Training Slower

So you want to run an Ultra: How to prepare for ultimate endurance

Running with the Kenyans: Discovering the secrets of the fastest people on earth

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

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

4th and Goal Every Day: Alabama's Relentless Pursuit of Perfection

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

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

Run or Die: The Inspirational Memoir of the World's Greatest Ultra-Runner

Ultramarathon Man: Confessions of an All-Night Runner

Inner Skiing: Revised Edition

ChiRunning: A Revolutionary Approach to Effortless, Injury-Free Running

What I Talk About When I Talk About Running

Sleep Smarter: 21 Essential Strategies to Sleep Your Way to A Better Body, Better Health, and Bigger Success: A Longevity Book

Daniels' Running Formula: Edition 4

Atomic Habits Summary (by James Clear): Summary and Illustration

Shoe Dog: A Memoir by the Creator of Nike