Sawatch Ascent

Sawatch Ascent

Sawatch Ascent is a high-alpine 50k held in Nathrop, Colorado on Sunday, September 27, 2026. The course starts and finishes at the base of Mount Princeton and reaches a high point of 13,150 feet. The route is described as a large lollipop that contains roughly one continuous 7,000 foot climb followed by approximately a 7,000 foot descent.

The middle section includes long stretches of singletrack, with about 12 miles on the Colorado Trail. The course surface mixes dirt and paved roads at the beginning and end, with extended singletrack through the core section. Key statistics listed for the course include about 33 miles total, 7,000 feet of vert, a low point near 8,200 feet, and an average elevation around 9,800 feet.

There are three staffed aid stations not counting the start and finish; water and Tailwind are available at all aid stations. Runners have an 11 hour cutoff to complete the course. The event is capped at 250 entrants. Camping at the start/finish is available for a fee with space limited to 35 spots. Finishers receive a medal and a race shirt, and professional full resolution images and complimentary drinks are provided at the finish. Registration offers a no frills option that removes the shirt or medal to reduce cost. Visit the organization's website for the most recent information.