Trail Running calendar near Nathrop 2025-2026

The Arrowhead Half Marathon and 5K is a scenic running event held in the picturesque Arrowhead area, featuring a challenging half marathon course with a significant elevation gain of 3,000 feet over 13 miles. Participants traverse beautiful trails across Arrowhead, Bachelor Gulch, and Beaver Creek S..

The Staunton Rocks! Marathon and Half Marathon, scheduled for August 23, 2025, is a premier trail running event held in Staunton State Park, Colorado. Designed by trail runners for trail runners, the event features a challenging yet accessible course that showcases the park's stunning landscapes, in..

The Grand Traverse Mountain Run is a challenging 40-mile ultra marathon that takes place from Crested Butte to Aspen, Colorado, following the route of the Grand Traverse Backcountry Ski race. Participants face over 6,000 feet of elevation gain as they traverse the stunning Elk Mountains. This event ..

The Creede Mountain Run, established in 1987, is a celebrated running event held in Creede, Colorado, marking the transition from summer to fall. Participants can choose from four race distances: 2 miles, 12 miles, 22 miles, and 50K, all set against the stunning backdrop of the San Juan Mountains. T..

Devil on the Divide is a challenging trail running event held in Empire, Colorado, featuring two race distances: a 50K and a 22K. Participants will experience breathtaking views of Clear Creek County and the Continental Divide, with the 50K course reaching altitudes over 13,000 feet and climbing mor..

The Cirque Series - Arapahoe Basin is a challenging mountain running event set in Keystone, Colorado, featuring a 9.2-mile course with an elevation gain of 2,411 feet. Participants start at 10,780 feet and navigate through scenic trails, including the High Noon parking lot and Black Mountain Lodge, ..

The MeadowGold 11K & 5K is a scenic running event organized by the Vail Recreation District, taking place in the picturesque Meadow Mountain area. This race offers participants the choice between an 11K and a 5K distance, catering to various skill levels and preferences. The event is designed to pro..

The Pony Express Trail Run is a scenic trail running event held at Rampart Reservoir, featuring two distance options: 8.5 miles and 16 miles. Set at an elevation of over 9,000 feet, participants can enjoy beautiful single-track trails, creeks, and local wildlife amidst Colorado's autumn scenery. The..

The Pikes Peak Ascent is a challenging running event that takes place in Manitou Springs, Colorado. Covering a distance of 13.32 miles with an elevation gain of 8,000 feet, participants race from Manitou Springs to the summit of Pikes Peak. To ensure safety and preparedness, all runners must complet..

The Crested Butte Ultra is an exciting running event set in the picturesque Crested Butte, Colorado, known for its exceptional trails. Participants can choose from three race distances: 50 Miler, 55K, and 35K, all of which traverse the stunning landscapes of Gunnison National Forest. Runners will en..

The 24 Hours Of Palmer Lake will take place in Palmer Lake from Saturday 27 September 2025 to Sunday 28 September 2025.

The Golden Leaf Half Marathon is a scenic running event that takes place annually in Aspen, Colorado. The race begins at Fanny Hill in Snowmass and follows the picturesque Government Trail, winding through beautiful aspen groves before finishing at Koch Park in downtown Aspen. This popular half mara..

The West Line Winder is a scenic trail running event featuring 30K and 50K races set in the picturesque Colorado Rockies, specifically in the San Isabel National Forest and surrounding areas. This event caters to all levels of runners, from beginners to seasoned ultramarathoners, offering a mix of s..

The Sangre de Cristo Trail Festival, organized by the Human Potential Running Series, invites participants to experience a rugged ultra run along the scenic Rainbow Trail in the Sangre de Cristo Mountains. Scheduled for September 27-28, 2025, the festival features various race distances, including 8..

The Sawatch Ascent will take place in Nathrop on Sunday 28 September 2025. You can run 50 kilometers.

The Castle Rock Trail Festival is an exciting athletic event that caters to a wide range of participants, from ultra-distance runners to families with children aged 5 to 12. Set against the stunning backdrop of Philip S. Miller Park and Ridgeline Open Space, the festival features various race option..

The Rim to Rim Royal Gorge Races feature a variety of running events, including a 5K road run, an 8-mile trail run, and a half marathon trail run, all set against the stunning backdrop of the Royal Gorge Bridge. Participants can enjoy challenging terrains, scenic views, and the thrill of crossing th..

The Pikes Peak Road Runners Fall Series is a popular cross-country running event featuring four trail races held in various parks around Colorado Springs. Each race presents unique challenges with distances increasing from 3.8 miles to 7.4 miles throughout the series. Participants must be at least 1..

The Sage Burner Trail Race takes place in the scenic Hartman Rocks Recreation Area of Gunnison, Colorado, surrounded by stunning views of the Maroon Bells and San Juan Mountains. This challenging race features a mix of technical slickrock, smooth singletrack, and doubletrack trails, making it a true..

The Indian Creek Trail Runs, part of the Human Potential Running Series, is a celebrated annual event known as the "Fall Classic." Scheduled for October 18, 2025, it features multiple race distances including 50-Mile, 55k, 15-Mile, and 5-Mile options. Set in the picturesque landscapes of Sedalia, Co..