Trail Running calendar near Auraria 2024-2025

The Ram Party Trail Runs is an exciting trail running event taking place at the Buffalo Lodge Bicycle Resort in Colorado Springs, CO. Scheduled for May 17, 2025, participants can choose from various distances, including 55 miles, 60K, 50K, 24K, and 15K, all set against the stunning backdrop of Rampa..

The Ol' College Try 24 Hour Ultra is Denver's inaugural 24-hour ultra race, taking place at Auraria Campus. Organized by Rise Again Running Events in collaboration with Tall Tales Ranch, this event invites runners of all abilities to challenge themselves and achieve personal milestones. Participants..

The North Fork 50 Mile/50K is an ultramarathon set in the scenic Colorado mountains near Denver. This event features a challenging course that is entirely on soft surfaces, primarily consisting of singletrack trails, with some sections of double track road. Runners will experience diverse landscapes..

The Crazy Legs 10K+ Trail Run will take place in Loveland on Sunday 1 June 2025.

The Great Divide Ultra is a premier trail running event held in Divide, Colorado, featuring a variety of race distances including 100 miles, 100K, 50K, and 25K, taking place on June 7-8, 2025. Set in the scenic Mueller State Park, participants will experience beautiful rolling meadows and stunning v..

Estes Park's Backyard Ultra is a unique ultra-running event set against the stunning backdrop of Lake Estes, Colorado. Participants must complete a distance of 4.252 miles within one hour, every hour, until only one runner remains. This format continues indefinitely, with the last runner standing be..

The Leadville Trail Marathon and Heavy Half is a challenging running event that takes participants through the historic mining district of Leadville, Colorado. The marathon covers 26.4 miles, while the Heavy Half spans 15.4 miles, both reaching high altitudes, with the marathon topping out at Mosqui..

The Timberview Trail Run is an exciting annual event held at Lory State Park in Colorado, featuring three race distances: a 10-mile, a 5-mile, and a 5K trail run. Scheduled for June 28, 2025, this event welcomes participants of all ages and skill levels, offering a scenic course with stunning views ..

The Race in the Clouds Dirt Festival will take place in Alma from Thursday 10 July 2025 to Sunday 13 July 2025. You can run between 10 and 13 miles.

Chase the Moon is an exciting overnight running event held in the Highlands Ranch Backcountry trail system, featuring a 12-hour solo ultramarathon and team relays. Participants can choose to run solo or form teams of 3 or 5. New this year, shorter distances such as 5 miles, 10 miles, 25K, and 50K ar..

The Silverheels Trail Runs, part of the Human Potential Running Series, is an annual event featuring multiple race distances, including a 100-Mile, 100k, 50-Mile, 60k, 19-Mile, and 10-Mile. Set in the stunning Colorado Front Range at elevations over 10,000 feet, the course offers a mix of single tra..

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 breathtaking views, making it a true test of endurance and skill. The event serve..

The Pikes Peak Ultra is an exciting running event designed to highlight the stunning trails of Colorado Springs. Established in 2015, the race begins at Bear Creek Regional Park and features courses of varying distances: 20K, 30K, 50K, and 50 miles. Participants will traverse scenic routes, includin..

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. Runners will experience significant elevation changes, with the lowest point above 9,000 feet and sections rea..

The Sheep Mountain Ultras, part of the Human Potential Running Series, is a challenging trail running event held annually in Fairplay, Colorado. The 10th edition will feature a 50-mile race, a 50k, and a half marathon, all set against the stunning backdrop of the South Park Valley. With an average e..

The Lory Summer Trail Series, scheduled for August 2025, features 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 to create a fun 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, including a peak at..

The Staunton Rocks will take place in Pine Junction Area on Sunday 24 August 2025. You can run between 13 and 26 miles.

The Front Range Ultra Dayze will take place in Loveland from Thursday 28 August 2025 to Monday 1 September 2025.

The Cirque Series - Arapahoe Basin is an exhilarating mountain running event set in Colorado, featuring a challenging 9.2-mile course with a vertical gain of 2,411 feet. Participants start at an elevation of 10,780 feet and navigate through scenic trails, including the new Half Moon Vista and Argent..