Sawatch Ascent
Nathrop, United States • 27 Sep 2026
Event Overview
The Sawatch Ascent is a 50k (33-mile) trail running event. It is scheduled for September 27, 2026, in Nathrop, Colorado. The event is capped at 250 participants.
Course Details
The route is a large loop, starting and finishing at the base of Mount Princeton. The course features a single long climb and descent, each involving approximately 7,000 feet of elevation change. The high point reaches 13,150 feet in elevation. The terrain consists of 26 miles of singletrack trail, including 12 miles on the Colorado Trail, 4.5 miles of pavement, and 2.5 miles of gravel roads.
Additional Information
There is an 11-hour time limit to complete the course. Three aid stations are provided along the route. Camping is available at the start/finish area for a fee, with space for 35 spots. Runners who register for a two-race challenge called the Sawatch 50/50 can run this event and another 50k on the preceding day. Registration includes a finisher medal, race shirt, and professional photos. Visit the organization's website for the most recent information.