Trail Running calendar near Montrose 2026-2027

Experience high alpine trail running in the scenic mountains surrounding Aspen. Choose between 50K, marathon, or heavy half marathon distances on dirt trails ending at a vibrant finish line festival.

The High Five 100 is a rugged, self-navigated 100-mile challenge near Lake City, CO. Runners must reach 24 checkpoints, summit 11 high peaks, and finish within 48 hours. There is no fee, no course markings, and no aid stations.

The UTE 100 takes runners on a high-altitude tour of Utah's La Sal Mountains. With over 25,000 feet of gain, the 100-mile loop reaches the state's highest race point at 12,272 feet. The event also offers 50-mile and 50k options, all startin..

The Telluride Mountain Run is a technical mountain race in Colorado's San Juans, with routes reaching over 13,000 feet. Runners face rocky, exposed terrain on old mining roads and alpine tundra. This demanding event is not suited for beginn..

This 40-mile point-to-point ultramarathon traverses the Elk Mountains from Crested Butte to Aspen, with over 6,000 feet of elevation gain. The event requires mandatory backcountry gear and supports Colorado Search and Rescue. Registration o..

The Creede Mountain Run in Colorado features four scenic distances, from a 2-mile fun run to a demanding 50K. The longer courses traverse the historic mining district and reach high points along the Continental Divide. Each route offers a d..

Run through the fall colors of the Elk Mountains in Marble, Colorado. Choose from a scenic 25K, an 8-mile climb, or a kids 2.5K. All proceeds support the local charter school and registration includes a shirt, BBQ, and a finisher medal.

A 13 mile mountain trail run in Ouray, Colorado that funds the Ouray School; the course starts and ends at Fellin Park, features limited cup water stations, packet pickup before race day, and awards for top finishers.

Experience the trails of Crested Butte and the Gunnison National Forest. Choose from 50-mile, 55K, or 35K distances. This late September event offers mountain meadows, ridges, and vibrant fall colors.

Experience a spectacular 13-mile trail run through the golden Aspen woods near Telluride. This high-altitude course starts near the airport and finishes in town, featuring mostly singletrack. Prepare for a semi-technical mountain adventure..

This bucket-list half marathon runs from Snowmass to downtown Aspen on the scenic Government Trail. It sells out quickly, with registration opening each May for the late September race.

The Sage Burner Trail Race winds through the high desert landscape of Hartman Rocks near Gunnison. Runners face a mix of slickrock, singletrack, and punchy climbs. After the run, a community chili meal celebrates the effort, with support go..

The West Elk Challenge is a point-to-point trail marathon and 30K through Colorado's North Fork Valley at peak fall colors. Runners climb to Inter-Ocean Pass on a course of gravel roads and singletrack. All proceeds fund summer camp scholar..

A Halloween-themed 5K run or walk in Aspen that benefits the local animal shelter. Bring your pet in costume for a chance to win prizes. The timed race offers cash prizes for top finishers and includes festive activities.

The Kessel Run Ultra offers five trail distances through the North Fruita Desert. The course features flowing singletrack and views of the San Juan Mountains. It's a cupless event with race shirts and finisher medals for all participants.