Trail Running calendar near Brighton 2026-2027

Lucky Lyons is a St. Patrick's Day themed run in Lyons, Colorado, featuring 5K and 10K races on mixed terrain. The 10K serves as a Bolder Boulder qualifier. Participants receive finisher dog tags, with awards for top age group finishers.

Race the Ranch is a unique snowshoe running event near Granby, Colorado. It offers 50K, 25K, and 5K distances across groomed and backcountry trails. All participants must carry snowshoes and receive a beanie and camp mug at the finish.

Run the Ranch offers trail races from 5K to 12-hour solo and relay events at the scenic Sylvan Dale Guest Ranch. Every runner receives a meal and a finisher award, with prizes for top performers. The event features varied terrain and has sp..

The Mountain Ridge Trail Race celebrates its 11th year in Colorado's Highlands Ranch. Runners choose from a 5K, 10K, half marathon, or 21-mile course on scenic dirt trails. The event features a cupless initiative to minimize environmental i..

A trail ultramarathon on April 12, 2026 along the Poudre River Trail offering 50 mile and 100 mile solo and relay options with stocked aid stations and a post race celebration in Greeley.

Event Overview The Rattler Trail Race takes place in Palmer Park in Colorado Springs, Colorado. It offers four distances: 5K, 10K, 25K, and 50K. The 50K distance consists of two loops of the 25K course. Course Details The event is designed..

Run the fast trails of Greenland Open Space in Colorado this May. Choose from four distances, from a 4-mile race to a 50K championship event. All runners receive a tech shirt and medal, with pizza waiting at the finish.

An invitation only endurance trial in Colorado focused on off trail navigation, map and compass skills, and limited aid. The field is capped at 40 and applications open in a short window in January 2026.

Event Overview The Quad Rock 50 is a 50-mile trail race held in the hills west of Fort Collins, Colorado. The event takes place on a single-loop course through Lory State Park and Horsetooth Mountain Park. The course consists of two 25-mile..

Samson's Revenge is a trail race on the grounds of the YMCA of the Rockies in Estes Park, Colorado. Runners can choose from a 10k, 27k, or 55k distance on a challenging looped course with significant elevation gain. Registration includes a..

The Farish Trail Race takes place on May 23, 2026 at the Farish Recreation Area in Woodland Park, Colorado. Participants can run a half marathon, 10K, 5K, or a free kids' one-mile event. The first 200 finishers get a special hat.

Two trail ultras in Buffalo Creek Colorado on May 30, 2026 covering singletrack through pine forest and burn areas. The event offers 50 Mile and 50K options, staffed aid stations, course markings, and a post race festival with awards.

The Summits Trail Runs offer a variety of distances on mountain trails at Granby Ranch Resort in Colorado. Courses feature single-track paths through forests, meadows, and aspen groves. This event focuses on community and the natural beauty..

Event Overview The Great Divide Ultra is a trail running festival held in early June in Divide, Colorado. The event takes place on the rolling meadows of Mueller State Park. The courses are 100% smooth single and double-track trail. Distanc..

Run the trails at Devil's Backbone Open Space in this classic 10k+ loop course. The event features old-school stick timing and finishes with an awards ceremony at a local brewery. This race series will conclude after the 2028 edition.

A trail race at Barr Lake State Park in Brighton, CO offering 50K, 30K, half, 15K and 5K on flat, 100% dirt courses with loop and out-and-back formats. The event uses a cupless policy and includes state park parking fees.

Explore Colorado's peaks in this series of five mountain races. Run four scenic half marathons and a challenging 25K across the state from June to September. Participants can choose to tackle three, four, or all five events.

The Timberview Trail Run returns for its seventh year at Lory State Park. Choose from scenic 5K, 5-mile, or 10-mile trail courses with views of Horsetooth Reservoir. Participants receive a shirt, finisher medal, and post-race refreshments.

Kick off Independence Day with a 5k run/walk in Winter Park, Colorado. The scenic route travels along the Fraser River Trail and finishes at the Rendezvous Event Center for a post-race party.

Multi distance trail event in Como Colorado on July 10 and July 11 2026, with courses above 10,000 feet ranging from 10 Mile to 100 Mile. Routes include single track, fire roads, historic mining terrain, and a point to point 100k.