The authors of The World's Toughest Endurance Challenges have shared breathtaking photos of races featured in the book:
As triathlon spreads around the world, so does the desire for some athletes to tackle harder and longer challenges. The Norseman is widely regarded as being one of the toughest long distance triathlons in the world. To begin, athletes jump from the back of a ferry into a freezing fjord before swimming 3.8km to the shore. They then cycle 180km through the Norwegian mountains before running a marathon. There are strict cut-offs on the run, and only the fastest athletes are allowed to finish on top of the 1880m (6200ft) Gaustatoppen mountain. . Photo: Kai-Otto Melau / Nxtri With stunning photography, comprehensive information, and interviews with athletes who have completed these races, “The World’s Toughest Endurance Challenges” is a testament to what people can achieve when they push their limits.