A fast, easy read. Inspiring in so many ways. Having conquered 13.1, it is still nearly impossible for me to grasp the concept of running 50 or 100 miles in.a.row. Without dying.

Interesting tidbits about the history of Nike, marketing of running shoes, and industrialization (especially the effect of modernization on the often elusive Tarahumara Indians). The author set out to discover why his foot was bothering him and why, despite the fact that running has existed for centuries, running injuries are on the rise. Advances in shoe technology seem to be hurting runners more than helping them. WHY.