Run Free – The True Story of Caballo Blanco, a feature documentary directed by Sterling Noren, chronicles the life of American ultra running legend Micah True (Caballo Blanco, or the White Horse) and his quest to create an ultra marathon in Mexico’s Copper Canyon to promote and preserve Tarahumara running tradition. True was a main character in Christopher McDougall’s best-selling book Born to Run – A Hidden Tribe, Super Athletes and the Greatest Race the World Has Never Seen.