Vassos Alexander shares his insight from interviews with legends of the sport and his own gruelling but rewarding experiences of extraordinary endurance racing - including the legendary 152 mile Spartathlon, widely regarded as the world's most relentless race. Vassos dissects and explores the tenacity that propels many to keep on running and running and running....

The hilarious trials and tribulations of stand-up comedian Paul Tonkinson as he attempts to beat the much lauded three-hour mark at the London Marathon. With a supporting cast of fellow comedians, this is a warmly written and wonderfully honest adventure-through-sport that will both entertain and inspire. Along the way, we are introduced to the characters helping Paul with his quest. Celebrity names such as Bryony Gordon, Russell Howard, Roisin Conaty and Vassos Alexander pop up with wit and wisdom....

Lisa Jackson is a surprising cheerleader for the joys of running. Formerly a committed fitness-phobe, she became a marathon runner at 31 and ran her first 56-mile ultramarathon at the age of 41. Unlike many runners, Lisa's not afraid to finish last. In fact, she's now done so in 25 of the 100-plus marathons she's completed so far.

Ultra running defies conventional logic. Yet this most brutal and challenging sport is now one of the fastest growing in the world. But is it an antidote to modern life or a symptom of a modern illness? Adharanand Finn travelled to the heart of the sport to find out - and to see if could become an ultra runner himself. His journey took him from the deserts of Oman to the snow-capped peaks of the Rockies, and from a 24-hour track race in Tooting to his ultimate goal, the 105-mile Ultra-Trail du Mont-Blanc. 

Full of incredible characters, amazing athletic achievements, cutting-edge science, and, most of all, pure inspiration, Born to Run is an epic adventure that began with one simple question: Why does my foot hurt? In search of an answer, Christopher McDougall sets off to find a tribe of the world's greatest distance runners and learn their secrets - and in the process shows us that everything we thought we knew about running is wrong.

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.

When Chris McDougall stumbled across the story of Churchill's 'dirty tricksters', a motley crew of English poets and academics who helped resist the Nazi invasion of Crete, he knew he was on the track of something special. To beat the odds, the tricksters - starving, aging, outnumbered - tapped in to an ancient style of fitness: the lost art of heroism.

After years of watching Kenyan athletes win the world's biggest races, Adharanand Finn set out to discover just what it was that made them so fast - and to see if he could keep up. Packing up his life he moved from Devon to Iten, in Kenya, to eat with, interview, sleep beside and - most importantly – run with, some of the greatest runners in the world. In the distance rests his dream, to join the best of the Kenyan athletes in an epic first marathon across the Kenyan plains.

Despite believing he was bionic as a child, Ira Rainey was far from an elite athlete with superhuman running abilities like the ones he read about in books. He was in fact an overweight and unfit slacker who felt a bit sorry for himself because he had sore feet. Sure he ran a bit, but he also sat around a lot and ate and drank too much. Why? Because he could, and because he was a delusional optimist who thought everything would always be just fine.

You might run for fitness. You might run for speed. But ultimately, running is about much more than the physical act itself. It is about the challenges we face in life, and how we measure up to them. It is about companionship, endurance, ambition, hope, conviction, determination, self-respect and inspiration.

The amazing life story of Britain's world conquering triathlete, Chrissie Wellington. Chrissie Wellington is the world's No 1 female Ironman triathlete, the current quadruple World Champion and World Record holder. In 2009 she was voted 'Sunday Times Sportswoman of the Year' and in 2010 was awarded the MBE. She is the undefeated champion of Triathlon, having won nine Ironman titles from nine races.

If you had told Helen two years ago that she would be getting up at six a.m. on Sundays to swim in a freezing reservoir and spending her Saturday nights unshowered and covered in mud in a pub, she would have spat out her champagne. But when everyone around you starts settling down, what else is a glamorous party girl to do but to launch herself into the world of endurance sport?

Anna was never anything like those "real" runners on telly, but when she read about New Zealand’s 3,000-kilometer-long Te Araroa Trail, she began to wonder...perhaps being a "real" runner was overrated. Maybe she could just run it anyway? The Pants of Perspective is a witty, colorful, and at times painfully raw account of a journey to the edge of what a woman believes herself to be capable of. It is a coming-of-age story that will lead you on a roller-coaster ride through fear, vulnerability, courage, and failure. 

An incredible but true account of achieving one of the most awe-inspiring midlife physical transformations ever

In October 2006, the night before he was to turn forty, Rich experienced a chilling glimpse of his future. Nearly fifty pounds overweight and unable to climb the stairs without stopping, he saw where his sedentary lifestyle was taking him. Most of us look the other way when granted such a moment of clarity, but not Rich.

Suffering from depression but desperate for 'normality', Rachel Cullen found herself in failing relationships, the wrong career and a reliance on alcohol and chocolate to get her through each day. Stuck in an endless cycle of mental misery, she put on a pair of old trainers. She'd never been able to think of herself as a 'runner' before, and the first time she forced herself out the door, she knew it would hurt. Everywhere. She just didn't realise how much it would heal her, too.