Trail Running calendar near Copper Mountain 2025-2026

Louisville Trail Race returns to Louisville, Colorado at Louisville Community Park. It offers three distances: Half-Marathon (13.1 miles), 10K (6.2 miles), and 5K (3.1 miles). The mostly dirt courses traverse scenic Front Range trails with views of the Flat Irons and a couple defining climbs, run as..

Thumbs Up Vertical Challenge takes place in Estes Park, Colorado, on December 6, 2025. The race uses the Thumb Open Space trail, a 2km out-and-back course with 540 feet of vertical gain per lap. The route is 100% single-track with switchbacks, steps and steep rocks, offering views of Longs Peak, Mou..

The Sawmill Trail Runs is an annual trail running event held at Staunton State Park in Pine, Colorado, approximately 40 miles southwest of Denver. The race offers three distance options: 8-Mile, 16-Mile, and 50k, with a combined runner capacity of 250. The course features scenic and challenging terr..

The USCSA Cross Country Ski Racing Festival, hosted by Colorado Mesa University, takes place at Snow Mountain Ranch Nordic Center in Granby, Colorado. Scheduled for January 24-25, 2026, this event features collegiate and junior racers competing in classic and skate sprint races. Distances include 15..

Gothic Mountain Tour takes place in Crested Butte, Colorado. It features two ski races: a 23.5-mile competitive course and a 17.85-mile recreational route around Gothic Mountain, finishing on the Crested Butte Nordic trail system at the Magic Meadows Yurt. The course begins in Crested Butte (competi..

The 21st Annual Run Through Time Trail Marathon and Half Marathon takes place in Salida, Colorado. It offers a Trail Marathon, a Trail Half Marathon, and a 2 Mile Run, plus a free kids’ 400-meter dash in Riverside Park. Courses run on the Arkansas Hills Trail System—dirt/jeep roads and narrow, hilly..

Race The Ranch is a winter snowshoe race held in Granby, Colorado on the Snow Mountain Ranch YMCA property. It offers three distances: 5k (1 lap), 25k (2 laps), and 50k (4 laps), designed to accommodate runners of all levels. The course combines singletrack, doubletrack, and groomed snowshoe trails,..

Niwot’s Challenge, the 13th annual event, takes place in Sedalia, Colorado along the South Platte River. It isn’t a race but a reckoning, a Barkley-inspired grassroots ultrarunning ordeal of secrecy and mischief. The course is unpublished and largely off-trail—a riddle of rock, bushwhack, and bruise..

The Greenland Trail Races, held annually in May at Greenland Open Space in Larkspur, Colorado, offer four trail running distances: 4 miles, 8 miles, 25K, and the 50K ultramarathon, known as Colorado's fastest 50K. The course features wide, smooth dirt trails through native grasslands, ponds, oak hil..

Endure Trail Runs, the 6th annual Mueller State Park event in Divide, Colorado, centers at the Pisgah Point Group Campground. It features a unique 12-Hour Endure timed challenge, where runners draw colored balls to decide the next loop and accumulate miles within the allotted time. In addition, 10k,..

North Fork 50 Mile/50K is an ultramarathon set in the Colorado mountains just southwest of Denver, near Buffalo Creek. The event offers two distances: 50 miles and 50K. The course is 100% soft-surface, comprised mostly of singletrack trails with a few short sections of double-track road.Runners clim..

The Summits Trail Runs, held at Granby Ranch Resort in Colorado's Rocky Mountains, offer a challenging and scenic trail running experience with distances from 6 miles to ultra distances including a 50k and a 12-hour Elevation Challenge. The courses feature rugged alpine terrain, single-track trails,..

Silverheels Trail Runs, the 12th annual event from the Human Potential Running Series, unfolds in Colorado, with races including 100k, 100-Mile, 50-Mile, 60k, 19-Mile, and 10-Mile. The revamped format places the main event at the Como Roundhouse in Como, CO, while the 100-Mile and 100k start at Burn..

The Summit 200 is a single, non-repetitive 200‑mile loop around Summit County, Colorado, centered near Frisco. The mostly non-urban route uses single-track trails, forest roads, and some rec paths and pavement, with the lowest altitude above 9,000 ft and sections climbing toward 12,800 ft, plus 12 f..

Sheep Mountain Trail Runs, part of the Human Potential Running Series, takes place near Fairplay, Colorado on the western slope of the South Park Valley. The 12th annual event offers 50-mile, 50k, and Half Marathon distances, with a 16-hour time limit and a 300-runner cap. The start/finish is at the..