Running enthusiast and journalist Christopher McDougall suffered from frequent injuries and was advised by experts that his body was not prepared for the extremes of the sport. In search of a solution, he ventured into the isolated canyons of Mexico to meet the Tarahumara Indians, known as the best runners in the world. To gain the tribe's trust, McDougall faced great challenges, including drug traffickers and mythical figures. The vibrantly written book combines adventure with profound questions about the limits of running and human endurance.