Trail Running calendar near Morrison 2025-2026

The Valkyrie Trail Race, held in Cheyenne Mountain State Park near Colorado Springs, Colorado, is a women-focused trail running event offering distances from 4 miles up to 50 kilometers. The course begins on crushed limestone meadows before transitioning to singletrack trails ascending Cheyenne Moun..

Endure Trail Runs, hosted by the Human Potential Running Series, is an annual event held at Mueller State Park in Divide, Colorado. The 6th edition features multiple race options including a unique 12-Hour timed event where runners draw colored balls to determine their next loop, a marathon, half ma..

The Weld Your Mettle Running Festival, held in Eaton, Colorado, is a multi-day event featuring a variety of running challenges for all levels. Participants can choose from solo or relay races lasting 3, 6, 9, 12, 24, or 36 hours, including a 100-mile ultra with a 36-hour limit. Unique formats like t..

The Crazy Legs Trail Run will take place in Loveland on Sunday 7 June 2026. You can run 10 kilometers.

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,..

The Timberview Trail Run is an annual trail running event held at Lory State Park in Bellvue, Colorado. Celebrating its seventh year in 2026, the race offers three distances: 5K, 5 mile, and 10 mile, catering to all levels from beginners to experienced trail runners. The scenic course features trail..

The Silverheels Trail Runs, hosted by the Human Potential Running Series, take place at the Como Roundhouse in Como, Colorado, at an average elevation above 10,000 feet. This scenic event offers multiple race distances including 10-Mile, 19-Mile, 60k, 50-Mile, 100k, and 100-Mile options. The course..

The Summit 200 is a challenging 200-mile ultramarathon held in Frisco, Colorado, featuring a single loop through Summit County's stunning mountain terrain. The course includes scenic hiking trails, forest roads, and some pavement, with elevations ranging from 9,000 to nearly 13,000 feet and a total..