Trail Running calendar near Bellvue 2025-2026

Trail Apples is a trail running event featuring three distance options: 4 miles, 8 miles, and 12 miles. Set in the scenic Chatfield State Park in Colorado, this event is organized by the Roxborough Running Club. Participants can enjoy the beautiful natural surroundings while challenging themselves o..

Run The Ranch is an exciting trail running event taking place at Sylvan Dale Guest Ranch in Loveland, Colorado. Scheduled for April 4-5, 2025, participants can choose from various distances, including a 5K, 10K, and multiple timed trail runs ranging from 4 to 12 hours, with options for solo runners..

The Can't Be Mad Running Festival, taking place in Erie, CO, offers a variety of running events including a 10K, 5K, a 3-hour timed event, and a Kid's 1K, with both in-person and virtual options available. The course features a flat and fast off-road cross-country style route, showcasing stunning vi..

The Great Western Trail Race, taking place in Severance, Colorado, offers a variety of running events including a 5K, 10K, half marathon, and a Kids Fun Run. Scheduled for April 19, 2025, this event celebrates Northern Colorado's newest trail, connecting Windsor, Severance, and Eaton. Participants c..

The Quad Rock 50 and 25 Mile Trail Races, organized by Gnar Runners, will take place on May 10, 2025, in Lory State Park and Horsetooth Mountain Park, near Fort Collins, Colorado. This event features two challenging courses, with the 50-mile race offering over 11,000 feet of vertical gain and the 25..

The Mountain Ridge Trail Race, taking place in Highlands Ranch, Colorado, offers a variety of distances including a 21-mile, half-marathon, 10K, and 5K, all set against the stunning backdrop of the front range. The event features 100% dirt and single-track trails, providing a mix of challenging elev..

Samson's Revenge is a trail running event held at the YMCA of the Rockies in Estes Park, Colorado, honoring the legacy of Samson, a famous elk poached in 1995. The race features three distances: 10K, 27K, and 55K, with a challenging course that includes a significant ascent known as the King of the..

The Weld Your Mettle Running Festival is a four-day event taking place in Eaton, Colorado, from May 23 to May 26, 2025. This festival features a variety of running events, including solo and relay formats ranging from 3 to 48 hours, as well as a 7K run and ruck. Participants can enjoy a unique exper..

The Ol' College Try 24 Hour Ultra is Denver's inaugural 24-hour ultra race, organized by Rise Again Running Events in collaboration with Tall Tales Ranch. Scheduled for May 24-25, 2025, at Auraria Campus, this event invites runners of all abilities to challenge themselves and achieve personal bests..

The Pilot Hill 25K is Wyoming's oldest continuously run footrace, originating in the 1970s. This classic trail race features rugged terrain, including two-track and single-track trails, sandy flats, and limestone hills, culminating at the summit of Pilot Hill, offering stunning views of the surround..

The Crazy Legs 10k+ Trail Run is an exciting running event taking place at Devil’s Backbone Open Space in Loveland, Colorado, on June 1, 2025. This trail run features a challenging course designed to provide a fun experience for participants. Runners will navigate through various trails, with water..

The Summits Trail Runs, part of the Human Potential Running Series, is an exciting trail running event set in the stunning Rocky Mountains at Granby Ranch Resort, Colorado. Scheduled for June 14, 2025, the event features multiple race distances, including a challenging 43-mile Quad, a 27-mile Triple..

The Barr Lake Trail Race, held at Barr Lake State Park in Brighton, Colorado, is a popular running event featuring multiple distances: 50K, 30K, Half Marathon, 15K, and 5K. Celebrating its sixth year, the race showcases one of Colorado's flattest and fastest courses, with less than 100 feet of eleva..

Estes Park's Backyard Ultra is a unique ultra-running event set against the stunning backdrop of Lake Estes, Colorado. Participants must complete a 4.252-mile loop every hour until only one runner remains, who is declared the winner. This format creates an exciting challenge, as there is no predeter..

The Timberview Trail Run is a scenic trail running event taking place at Lory State Park in Colorado, featuring three race distances: 5K, 5 Mile, and 10 Mile. Scheduled for June 28, 2025, this event caters to athletes of all levels, including beginners and families, with a beginner-friendly 5K route..

Chase the Moon is a unique 12-hour endurance running event held overnight in the scenic Highlands Ranch Backcountry trail system. Participants can choose to run solo or form teams of 3 or 5 for a relay. The race begins at sunset and continues under the full moon, concluding at sunrise, offering brea..

The Never Summer 100km and 60km races will take place from July 25-27, 2025, in the scenic State Forest State Park, Colorado. Participants can choose between a challenging 100km course with 14,450 feet of elevation gain or a 60km option with 8,850 feet of gain. Both races feature diverse terrains, i..

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 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 various distances, including 5K, 10K, and 12K, designed to cater to both novice and experienced runners. The..

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..