In this inspiring book Christopher McDougall recounts his journey to Mexico to find the legendary Caballo Blanco (Micah True 1953-2012) as he seeks answers about how to overcome a nagging injury. True was a quiet man who enjoyed running great distances and seemed to have many qualities in common with the Tarahumara Indians of the Copper Canyon, and was the only outsider who had been accepted by the tribe. Known as the Running People, the Tarahumara regularly run extremely long distances as part of their daily routine. McDougall eventually meets many tribe members, and with Caballo Blanco organizes a 50 mile race where tribe members compete side by side with non tribe members.
Now an annual event, this race formerly known as the Copper Canyon Ultramarathon is now named Caballo Blanco Ultra, honoring the man who has inspired so many. Learn more about the ultra here: http://www.ultracb.com/
UPDATE: Please see the comments on this post for corrections and additional information. Many thanks to Maria Walton, Race Director, UltraMarathon, Caballo Blanco!!