Caballo Blanco Goes Missing

In Born to Run, author Christopher McDougall talks about the legendary accomplishments of ultrarunner Micah Tue, aka Caballo Blanco, or “the wandering White Horse of Mexico’s Copper Canyons.” Last month, Tue disappeared after embarking on a 12-mile run in Gila National Forest. Distraught, worried, and curious, McDougall set off on a hunt to track him down.