It may come as a surprise to many people, but Japan is the most running-obsessed country on Earth. A 135-mile relay race, or ekiden, is the country's biggest annual sporting event. Thousands of professional runners compete for corporate teams in some of the most competitive races in the world. The legendary "marathon monks" run a thousand marathons in a thousand days to reach spiritual enlightenment. Yet so much of Japan's running culture remains a mystery to the outside world, on par with many of the unique aspects of contemporary Japan.

Once the reserve of only the most hardcore enthusiasts, ultra running is now a thriving global industry, with hundreds of thousands of competitors each year. But is the rise of this most brutal and challenging sport - with races that extend into hundreds of miles, often in extreme environments - an antidote to modern life, or is it a symptom of a modern illness? In The Rise of the Ultra Runners, award-winning author Adharanand Finn travels to the heart of the sport to investigate the reasons behind its rise and discover what it takes to join the ranks of these ultra athletes.

Why does it make sense to Ethiopian runners to get up at three a.m. to run up and down a hill? Who would choose to train on almost impossibly steep and rocky terrain, in hyena territory? And how come Ethiopian men hold six of the top 10 fastest marathon times ever? Michael Crawley spent 15 months in Ethiopia training alongside (and sometimes a fair way behind) runners at all levels of the sport, from night watchmen hoping to change their lives to world-class marathon runners, in order to answer these questions.

Part narrative, part practical, this adventure takes you to the foothills of Ethiopia and the ‘town of runners’; to the training grounds of world-record-holding marathon runners in Kenya; racing across the Arctic Circle and the mountains of Europe, through the sweltering sands of the Sahara and the hostility of a winter traverse of the Pennine Way, to witness the incredible natural movement of runners in these environments.

As a journalist whose career spans three decades, CNN correspondent Tom Foreman has reported from the heart of war zones, riots, and natural disasters. He has interviewed serial killers and been in the line of fire. But the most terrifying moment of his life didn't occur on the job - it occurred at home, when his 18-year-old daughter asked, "How would you feel about running a marathon with me?"

When Meb Keflezighi - the first person in history to win both the Boston and New York City marathons as well as an Olympic marathon medal - ran his final marathon in New York in 2017, it marked the end of an extraordinary distance-running career. Meb's last marathon was also his 26th, and each of those marathons has come with its own unique challenges, rewards, and outcomes. In 26 Marathons, Meb takes listeners on those legendary races, along every hill, bend, and unexpected turn of events that made each marathon an exceptional learning experience, and a fascinating story.

Isolated by Mexico's deadly Copper Canyons, the blissful Tarahumara Indians have honed the ability to run hundreds of miles without rest or injury. In a riveting narrative, award-winning journalist and often-injured runner Christopher McDougall sets out to discover their secrets. In the process, he takes his readers from science labs at Harvard to the sun-baked valleys and freezing peaks across North America, where ever-growing numbers of ultra-runners are pushing their bodies to the limit.

In Eat and Run, 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.

Scott Jurek is one of the world's best known and most beloved ultrarunners. Renowned for his remarkable endurance and speed, accomplished on a vegan diet, he's finished first in nearly all of ultrarunning's elite events over the course of his career. But after two decades of racing, training, speaking, and touring, Jurek felt an urgent need to discover something new about himself. He embarked on a wholly unique challenge, one that would force him to grow as a person and as an athlete: breaking the speed record for the Appalachian Trail.

Welcome to the Barkley Marathons, a fever dream of an ultra event, inspired by a prison break, heralded by a conch blast, paid for in cigarettes and socks, and completed only by a select few. A race in which competitors haul themselves up mountains, through extreme weather conditions, beyond pain and exhaustion, mile after mile. Completed 60 miles? That’s just the fun run. In the Spell of the Barkley is a story of sporting obsession, exploring what drives individuals to challenge themselves at the limits of what is possible – and what it takes to succeed.

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.

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.

The best-selling author of Born to Run now travels to the Mediterranean, where he discovers that the secrets of ancient Greek heroes are still alive and well on the island of Crete, and ready to be unleashed in the muscles and minds of casual athletes and aspiring heroes everywhere.

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.

In the dusty hills above San Diego, Bob Larsen became America's greatest running coach. Starting with a ragtag group of high school cross country and track runners, Larsen set out on a decades-long quest to find the secret of running impossibly fast, for longer distances than anyone thought possible. Running to the Edge is a riveting account of Larsen's journey, and his quest to discover the unorthodox training secrets that would lead American runners (elite and recreational) to breakthroughs never imagined.