From a rugged, ultra-muddy backcountry path in New Hampshire, to a lung piercing, single-track in New Mexico, we present America’s finest and toughest trail runs — totally worth it, but guaranteed to kick your butt.
This beast of a route vies for Holy Grail status of all Colorado trail runs, and if you bag it, you’ll be revered among all serious endurance athletes. Over 17 grueling miles, you’ll climb over 5,000 feet in elevation on a dirt road from Ouray to the crest of Imogene Pass in the 14,000-foot-high San Juan Mountain range. At the top, gasping for breath and likely light headed, you’ll drop down Tomboy Road past the Tomboy ghost town through alpine basin back to forest and finishing at Telluride. If you want a crazy challenge and something to train for, sign up for the annual race that takes place at the beginning of September.