Trail Running calendar near Morrison 2025-2026

The Silverheels Trail Runs, part of the Human Potential Running Series, is an annual event taking place in Como, Colorado, featuring various 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 offers stunning views..

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 8,000 feet of elevation gain, technical climbs, and exhilarating descents, making it an ideal preparatory event for the Leadville T..

The 10K & 5K @ 10,000 Feet is an exhilarating running event hosted by the Vail Recreation District, set against the stunning backdrop of the Colorado mountains. Participants can choose between a 10K or 5K race, both designed to challenge runners at high altitude, providing a unique experience for at..

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 exciting running event that showcases the stunning trails of Colorado Springs. Established in 2015 by Mad Moose Events, this ultra race begins at Bear Creek Regional Park and features a challenging course that includes the iconic Seven Bridges Trail and Pipeline Trail. Par..

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 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 Boulder Rez Marathon is a scenic running event held at the Boulder Reservoir in Colorado, featuring a flat course primarily on dirt roads and trails. Participants can choose from various distances, including a marathon, half marathon, 3/4 marathon, and 10K. The race offers stunning views of the..

The TransRockies Run is an exhilarating six-day stage race covering 120 miles through the stunning Colorado Rockies. Scheduled for August 4-9, 2025, this event offers participants a unique adventure, combining trail running with a vibrant community atmosphere. Runners experience breathtaking landsca..

The Lory Summer Trail Series, taking place from August 5 to August 26, 2025, offers a series of midweek trail races at Lory State Park in Fort Collins, Colorado. Participants can choose from distances of 5K, 10K, and 12K, designed to cater to both novice and experienced trail runners. The event aims..

The Eltuck Valley 5K is a fun and engaging running event taking place in Bellvue, Colorado, as part of the Lory Summer Trail Series. This race is designed for both novice and experienced trail runners, offering a flat and fast course that is ideal for those looking to improve their speed. Participan..

The Holy COW Trail Stampede is an exciting running event held in Westminster, Colorado, featuring a 10-mile race and 5K/10K options. Participants can enjoy a fun and festive atmosphere while supporting the charity partner, Growing Home, which focuses on breaking the cycle of poverty for families in..

Dirt Circus - Boulder is a vibrant community running event scheduled for August 9, 2025, in Boulder, Colorado. Organized by UltraSignup, this festival celebrates local races, running clubs, and businesses, fostering camaraderie among trail running enthusiasts. Participants can enjoy a social run wit..

The Into the Hills Eltuck 10K is part of a summer trail series held at Lory State Park in Bellvue, Colorado. This event, scheduled for August 12, 2025, features a challenging 10K course with significant elevation gain, making it the hilliest race in the series. The series aims to provide a fun and a..

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, this grueling event challenges participants with a 100-mile out-and-back course that features extreme elevation changes, reaching a peak of..

The Into the Hills Eltuck 5K is part of a series of midweek trail races held at Lory State Park in Bellvue, Colorado. Scheduled for August 19, 2025, this event features a challenging course with a steep climb and descent, making it suitable for both novice and experienced trail runners. Participants..

The NoCo Urban Ultra & Relay is a long-distance running event taking place on August 22-23, 2025, along the scenic Poudre River Trail in Northern Colorado. Participants can choose from a 50-mile solo race, a 100-mile solo race, or relay options for both distances. This inaugural event, organized by..

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 Arrowhead Half Marathon and 5K is a scenic running event held in Arrowhead, Colorado, featuring a challenging half marathon course with approximately 3,000 feet of elevation gain over 13 miles. Participants traverse beautiful trails across Arrowhead, Bachelor Gulch, and Beaver Creek Ski Resorts...