Logo

The Sneffels Round

Ouray, United States • 30 Aug 2025

The Sneffels Round, organized by Sky Pilots Endurance Navigators, is a free mountaineering endurance challenge based in Ouray, Colorado. Participants race the 100-hour clock by building their own route through roughly 39 peaks, including Mt. Sneffels, with several elective options that let finishers complete as few as 34–35 peaks.

A typical route is about 75 miles long with around 43,000 feet of vertical gain and roughly 70 percent off-trail; most summits are Class 2, with two mandatory Class 3s. The event relies on staggered starts, trackable devices, and limited crew support at checkpoints. New for 2025 are waitlists, a strict participant cap, and a special self-supported registration path. Visit the organization's website for the most recent information.

United States Colorado Ouray

Race information

Website
75 mi
43000 m+
The Sneffels Round Course
Visit the organization's website for the most recent information.
Trail runs nearby

Imogene Pass Run

Telluride - 10 mi from Ouray

52nd Annual Imogene Pass Run takes place in Telluride, Colorado. The challenging mountain race runs from Telluride over Imogene Pass to a finish in Telluride, with aid stations along the way. The course includes a summit at mile 10 and a Tunnel Station at mile 15.5, and organizers describe it as an..

Blisters & Brews Telluride 5k

Telluride - 10 mi from Ouray

Blisters & Brews is a 5k fundraiser race held in Telluride, designed for attendees of the Telluride Blues & Brews Festival to enjoy a morning of exercise before the festivities begin. The event supports the Telluride Adaptive Sports Program and features a scenic route that includes views of Bridal V..

Ouray 50 Mile Endurance Run

Ouray

The Ouray 50 Mile Endurance Run, held in Ouray, Colorado, is a challenging mountain ultramarathon featuring approximately 23,582 feet of elevation gain. Known for its technical and demanding trails, the course is set nearly two miles above sea level amidst stunning mountain scenery. The race is desi..

Ouray Mountain Trail Run

Ouray

Ouray Mountain Trail Run takes place in Ouray, Colorado, on September 20, 2025, and covers 13 miles of mountainous terrain, starting and finishing at Fellin Park. A fundraiser for Ouray School, it’s hosted by PATT and the HS Outdoor Education Class to support student trips to Moab, Denver, Washingto..

Deep Creek Trail Half Marathon

Telluride - 10 mi from Ouray

Deep Creek Trail Half Marathon is a roughly 13-mile trail race in Telluride, Colorado. The course starts at the beginning of Last Dollar Road near the Telluride Airport, runs to the Deep Creek Corral, then climbs into Aspen-filled woods and follows the Deep Creek Trail back to Telluride. The mostly..

San Juan Solstice 50 Mile

Lake City - 19 mi from Ouray

San Juan Solstice 50 Mile Run is a 50-mile ultramarathon set for June 20, 2026. The event uses a lottery-based entry with a cap of 300 runners; registration runs from January 15 to January 31. Lottery entrants are charged and confirmed, while additional applicants go to a waitlist and are not charge..