Download or read book The World's Toughest Endurance Challenges written by Richard Hoad and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the world seemingly ordinary people are undertaking extraordinary challenges that will push their limits to achieve the improbable - by sea, bike, foot or sled. This book looks at 50 of the most extreme marathons, triathlons, bike rides and other iconic endurance events from around the globe