Up for the challenge?

"With over 60 challenges covering all four corners of the globe and a range of different disciplines, discover events like the North Pole Marathon where competitors run the 26.4 miles in sub-zero conditions or the Atlantic Challenge, a race that sees you and a rowing boat attempt to cross the world's second largest ocean. Then there's the Simpson Desert Challenge, a five-day bike race across the Australian Outback, or the Tevis Cup, a 100-mile, 24-hour horse ride across California's Sierra Nevada mountains--an event where on average only around half the competitors make it to the finish line. Alongside the event profiles, which are illustrated with spectacular photography are interviews with some of the competitors and organizers, explaining what it's actually like putting yourself through some of the most extreme physical test known to man."--provided by publisher.