Trail Running calendar near Nathrop 2025-2026

The Garden of the Gods Ten Mile Run® is a premier running event held in Colorado Springs, featuring a challenging 10-mile course that winds through the stunning sandstone rock formations of Garden of the Gods Park. Celebrated for over 45 years, this race attracts participants from across the United..

The adidas Terrex 10K Spring Runoff is an exhilarating trail running event set in the stunning Vail Valley, taking place at an elevation of over 8,000 feet. Participants will face a challenging course featuring constant elevation changes and diverse terrain, making it one of the most demanding 10K r..

Ring the Springs is a trail running event held in Colorado Springs, featuring 100K, 50K, and 30K distances. The race showcases the area's stunning natural landscapes, including mountains, parks, and iconic landmarks like Garden of the Gods. Participants traverse challenging trails with significant e..

The Leadville Trail Marathon and Heavy Half is a challenging running event held in the historic mining district of Leadville, Colorado. Participants can choose between a 26.4-mile marathon or a 15.4-mile Heavy Half, both featuring breathtaking views and high-altitude trails, with the marathon reachi..

The Vail Hillclimb will take place in Vail on Saturday 5 July 2025.

The Alma Foundation Race in the Clouds Dirt Festival is an exciting outdoor event taking place in Alma, Colorado, from July 10 to July 13, 2025. Set at an elevation of 10,600 feet, the festival features a variety of activities including mountain bike racing, trail running, a free kids' race, and an..

The Silverheels Trail Runs is an annual ultramarathon event held in Colorado's stunning Front Range, featuring distances from 10 miles to 100 miles. The race takes place at high elevations, with courses through alpine meadows, ghost towns, and mountain forests, offering spectacular views of Colorado..

The Grin & Bear It is Crested Butte’s oldest trail running event, featuring a 15 km out-and-back race and a new 25 km loop, both starting and ending at the Crested Butte Nordic Center. The event takes place in July and offers scenic routes through mountain trails with significant elevation changes,..

The Leadville Silver Rush 50M is a challenging 50-mile trail run that tests participants' endurance and grit against the stunning backdrop of the Rocky Mountains. The course features approximately 8,000 feet of elevation gain, taking runners through historic mining districts and offering breathtakin..

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of the Colorado Rocky Mountains. Participants will experience a grueling course featuring 23,500 feet of vertical gain, reaching elevations of 13,100 feet. The race includes a loop that traverses beautiful s..

The Audi Power of Four Trail Run is an exciting running event set in the scenic mountains of Aspen Snowmass. Participants can choose from three different race distances: a challenging 50K, a 25K, and a 10K run, catering to various skill levels. This event not only offers a chance to enjoy the beauti..

The 10K & 5K @ 10,000 Feet will take place in Vail on Saturday 19 July 2025. You can run between 5 and 10 kilometers.

The Barr Trail Mountain Race is a renowned summer mountain running event held in Manitou Springs, Colorado. Covering a challenging 12.6-mile course, participants start at the Cog Railway Station, ascend the iconic Barr Trail to Barr Camp, and then descend back to the Barr Trailhead. This race, estab..

The Pikes Peak Ultra is an annual trail running event held in Colorado Springs, featuring distances of 20K, 30K, 50K, and 50 miles. Starting at Bear Creek Regional Park, the course winds through scenic trails including Cheyenne Canon, Seven Bridges Trail, and Pipeline Trail, with some routes offerin..

The Creede 100 is an exhilarating 100-mile ultramarathon set in the historic mining town of Creede, Colorado. With only 100 spots available, this challenging race offers participants breathtaking views of the San Juan Mountains, including climbs above 12,000 feet and scenic trails along the Continen..

The Summit 200 is a challenging ultramarathon scheduled for July 28, 2025, in Summit County, Colorado. It features a 200-mile loop through scenic mountain terrain, with over 40,000 feet of elevation gain and sections exceeding 12,700 feet altitude. The race emphasizes a small, intimate field limited..

The Berry Picker Trail Run will take place in Vail on Saturday 2 August 2025.

The Sheep Mountain Ultras, part of the Human Potential Running Series, is an annual trail running event held in Fairplay, Colorado. Scheduled for August 2, 2025, it features three race distances: a challenging 50-mile, a 50k, and a half marathon, all set against the stunning backdrop of the South Pa..

The TransRockies Run is a six-day, 120-mile trail running event held in Colorado, offering participants an adventurous experience through stunning mountain landscapes. Known for building a strong community, the event attracts runners from around the world who seek challenging courses, camaraderie, a..

The Run the Rockies Trail Race is a scenic event featuring a 5k, 10k, and half marathon through the trails of Frisco Peninsula, offering stunning views of Dillon Reservoir and the Ten Mile Range. The courses include single track and dirt roads, starting and finishing at the Frisco Nordic Center. Par..