New York Times best-selling author and ultramarathoning legend Dean Karnazes has pushed his body and mind to inconceivable limits, from running in the shoe-melting heat of Death Valley to the lung-freezing cold of the South Pole. He’s raced and competed across the globe and once ran 50 marathons, in 50 states, in 50 consecutive days.

Karnazes reveals the mind-boggling adventures of his nonstop treks through the hell of Death Valley, the incomprehensible frigidity of the South Pole, and the breathtaking beauty of the mountains and canyons of the Sierra Nevada.

Finding Ultra is Rich Roll's incredible but true account of achieving one of the most awe-inspiring midlife physical transformations ever. One evening in 2006, before turning 40, Rich experienced a chilling glimpse of his future. Nearly 50 pounds overweight at the time and unable to climb the stairs without stopping, he plunged into a new way of eating that made processed foods off-limits and prioritized plant nutrition and daily training. Rich morphed - in mere months - from out-of-shape midlifer to endurance machine. Revised and updated edition with a new and original foreword and a bonus chapter.

Why we think it’s a great listen: Want to join the “superhumans”? Luckily you don’t have to run to catch up with them, thanks to McDougall’s and Sanders’ inspiring (and motivating) journey through history, science, physiology, health, entertaining characters and unlikely friendships. Full of incredible characters, amazing athletic achievements, cutting-edge science, and, most of all, pure inspiration, Born to Run is an epic adventure.

David Clark is a formerly obese alcoholic and fast food junkie who found a new life in running. Now, 13 years after his transformation, he shares his inspiring story of taking running to the extreme edge of his physical and spiritual breaking points. Having run more than a hundred races, including the Leadville 100-Mile Trail Run and the Hardrock 100, David has achieved unimaginable success in the ultramarathon world, considering his humble start.

The most accomplished mountain runner of all time contemplates his record-breaking climbs of Mount Everest in this profound memoir - an intellectual and spiritual journey that moves from the earth’s highest peak to the soul’s deepest reaches.

After a decade-long addiction to crack cocaine and alcohol, Charlie Engle hit bottom with a near-fatal six-day binge that ended in a hail of bullets. As Engle got sober, he turned to running, which became his lifeline, his pastime, and his salvation. He began with marathons, and when marathons weren't far enough he began to take on ultramarathons, races that went for 35, 50, and sometimes hundreds of miles, traveling to some of the most unforgiving places on earth to race.

Ultramarathons don't leave much room for mistakes. Don't learn the hard way: Get a jump on training for an ultramarathon with Hal Koerner's Field Guide to Ultrarunning, a comprehensive handbook to running 30 to 100 miles and beyond, authored by one of the most experienced and recognized athletes in the sport.   

Aside from her rock star looks, Catra Corbett is a standout in the running world on her accomplishments alone. And, unbelievably, she's also a former meth addict. After two years of addiction, Catra is busted while selling, and a night in jail is enough to set her straight. She gives up drugs and moves back home with her mother, abandoning her friends, her boyfriend, and the lifestyle that she came to depend on. Her only clean friend pushes her to train for a 10K with him, and surprisingly, she likes it and decides to run her first marathon after that.

Writing from both the cutting edge of scientific discovery and the front-lines of elite athletic performance, National Magazine Award-winning science journalist Alex Hutchinson presents a revolutionary account of the dynamic and controversial new science of endurance.

After running an ultramarathon through the Copper Canyons of Mexico, Christopher McDougall finds his next great adventure on the razor-sharp mountains of Crete, where a band of Resistance fighters in World War II plotted the daring abduction of a German general from the heart of the Nazi occupation.

Deena Kastor was a star youth runner with tremendous promise, yet her career almost ended after college, when her competitive method - run as hard as possible, for fear of losing - fostered a frustration and negativity and brought her to the brink of burnout. On the verge of quitting, she took a chance and moved to the high altitudes of Alamosa, Colorado, where legendary coach Joe Vigil had started the first professional distance-running team. There she encountered the idea that would transform her running career: the notion that changing her thinking - shaping her mind to be more encouraging, kind, and resilient - could make her faster than she’d ever imagined possible.

When Chris McDougall agreed to take in a donkey from an animal hoarder, he thought it would be no harder than the rest of the adjustments he and his family had made after moving from Philadelphia to the heart of Pennsylvania Amish country. But when he arrived, Sherman was in such bad shape he could barely move, and his hair was coming out in clumps. Chris decided to undertake a radical rehabilitation program designed not only to heal Sherman's body but to heal his mind as well - and so Chris decided to teach Sherman how to run.

Ultrarunner Scott Jurek opens up about his life and career - as an elite athlete and a vegan - and inspires runners at every level. From his Midwestern childhood hunting, fishing, and cooking for his meat-and-potatoes family, to his early beginnings in running (he hated it), to his slow transition to ultrarunning and veganism, to his world-spanning, record-breaking races, Scott’s story shows the power of an iron will and blows apart all the stereotypes of what athletes should eat to fuel optimal performance.  

This revolutionary training method has been embraced by elite runners - with extraordinary results - and now you can do it, too. Respected running and fitness expert Matt Fitzgerald explains how the 80/20 running program - in which you do 80 percent of runs at a lower intensity and just 20 percent at a higher intensity - is the best change runners of all abilities can make to improve their performance.