Trail Running calendar near Glenwood Springs 2024-2025

The 12 Hours of Sunlight is an exciting running event taking place in Glenwood Springs, Colorado. Participants can choose to compete individually or as part of a team, with options for teams of two or four. This endurance race challenges runners to cover as much distance as possible within a 12-hour..

The Gothic Mountain Tour is a scenic running event held in Crested Butte, Colorado, featuring two courses: a 23.5-mile competitive race and a 17.85-mile recreational race. This unique and challenging event offers participants the opportunity to circumnavigate the stunning Gothic Mountain. Scheduled ..

The Mt Sopris Run-Off is an exciting running event taking place in Carbondale, CO, featuring two race distances: a 10-Mile and a 25k. Scheduled for May 18, 2025, this race will showcase the stunning "Up & Over" single track trail, starting at Flying Dog Ranch and finishing at Rock Bottom Ranch in Ba..

The Broken Brain Backyard is a unique running event taking place in Craig, CO, aimed at raising funds for Parkinson’s, ALS, and Alzheimer’s research. Participants can choose between the Backyard Ultra, where competitors run a 4.167-mile loop every hour until only one remains, or the more relaxed Cit..

The Howelsen Hill Trail Run is an exciting trail running event set in the scenic surroundings of Howelsen Hill in Steamboat Springs, Colorado. Participants can choose between two distances: an 8-mile and a 4-mile run, both of which traverse beautiful single-track trails adorned with aspen trees and ..

The Leadville Trail Marathon and Heavy Half is a challenging running event set 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 rugged trails and high-altitude terrain, with the marathon reaching Mo..

The Alma Foundation Race in the Clouds Dirt Festival, taking place in Alma, Colorado, offers a thrilling weekend of outdoor activities from July 10 to July 13, 2025. Participants can enjoy a variety of events, including mountain bike races, trail running, a free kids' bike race, and an off-road duat..

The Silverheels Trail Runs, part of the Human Potential Running Series, is an annual event taking place in Como, Colorado, featuring a variety of challenging distances including 10-Mile, 19-Mile, 60k, 50-Mile, 100k, and 100-Mile races. Set at an average elevation of over 10,000 feet, the course offe..

The Leadville Silver Rush 50M is a challenging 50-mile trail run set against the stunning backdrop of the Rocky Mountains. Participants will navigate a course featuring significant elevation gain, technical climbs, and exhilarating descents, totaling approximately 8,000 feet of elevation gain. This ..

The Spring Creek Memorial Trail Run is a scenic running event held in Steamboat Springs, Colorado, featuring a 9.5-mile loop and a 5K course. The race honors Patty Brenner Hagberg, who tragically lost her life on the trail in 1991, emphasizing the importance of sharing multi-purpose trails. Particip..

Grand Mesa Ultras is an exciting mountain running event taking place in Grand Mesa, Colorado, known for its stunning trails and breathtaking views. Participants can choose from three race distances: 50 Miler, 55K, and 30K, all set against the backdrop of the world's largest flat-topped mountain, wit..

The Summit 200 is an extraordinary 200-mile mountain race set in Summit County, Colorado, featuring a challenging loop that showcases stunning hiking trails, forest roads, and scenic views. Participants will experience significant elevation changes, with the lowest point over 9,000 feet and sections..

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 Leadville Trail 100 Mile Run, known as the "Race Across the Sky," is a prestigious ultramarathon held annually in Leadville, Colorado. Established in 1983, it challenges participants with a grueling 100-mile out-and-back course that features extreme elevation changes, reaching a peak of 12,600 f..

The Continental Divide Trail Run, scheduled for August 23, 2025, in Steamboat Springs, Colorado, features three trail race distances: 5 Mile, 16 Mile, and 50K. Participants will experience stunning views while navigating through aspen and pine forests, with significant elevation gains—over 3,500 fee..

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

The 10k @ 10,000 Feet is a renowned trail running event held in Steamboat Springs, Colorado, celebrated for its stunning mountain scenery. Scheduled for August 31, 2025, the race features a challenging 10k course that actually measures 6.8 miles, starting at the summit of Rabbit Ears Pass. Participa..

The Emerald Mountain Trail Run, part of the Steamboat Springs Running Series, features two scenic distances: a 12k (approximately 7.75 miles) and a 4-mile run or hike. Set against the stunning backdrop of northern Colorado, the race begins at Howelsen Hill and winds through aspen-lined single tracks..

The Cirque Series at Arapahoe Basin is a thrilling mountain running event scheduled for September 6, 2025. Participants will tackle a challenging 9.4-mile course with an elevation gain of 2,411 feet, starting from the base at 10,780 feet. The route features stunning views and diverse terrain, includ..

Run Rabbit Run is an annual running event held in Steamboat Springs, Colorado, featuring both 50-mile and 100-mile races through the stunning Routt National Forest. The event, which will take place on September 12-13, 2025, is designed for runners of all levels, with a challenging course that includ..