I've read lots of books about people who've undertaken long journeys or done epic sporting feats, so I'm not easily impressed, but this book grabbed my interest from page 1 and held it to the end. The writer's endurance is extraordinary, and he emphasizes how mental strength becomes more important than physical strength in long races. What comes across very powerfully is his love of running and of other sports, and of life. Also, this isn't an athlete who is heavily sponsored and winning big prizes: often he runs for fun or to raise money for a good cause, and all the time he has a regular job. This is one of the best sport books I've read. Concisely written, it left me wanting more.