Trail Running calendar near Erie 2025-2026

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..

The Vail Hillclimb will take place in Vail on Saturday 5 July 2025.

The Alma Foundation Race in the Clouds Dirt Festival is an exciting outdoor event taking place in Alma, Colorado, from July 10 to July 13, 2025. Set at an elevation of 10,600 feet, the festival features a variety of activities including mountain bike racing, trail running, a free kids' bike race, an..

Chase the Moon is an exciting 12-hour endurance running event taking place in the Highlands Ranch Backcountry trail system. Participants can choose to run solo or form teams for a relay, with options for 3-person and 5-person teams. The race begins at sunset and continues through the night, providin..

The Silverheels Trail Runs, part of the Human Potential Running Series, will take place on July 11-12, 2025, in Como, Colorado. This annual event features multiple race distances, including a 100-Mile, 100k, 50-Mile, 60k, 19-Mile, and 10-Mile, catering to a range of runners. The courses traverse stu..

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 Never Summer 100km and 60km races will take place from July 25-27, 2025, in the stunning landscapes of State Forest State Park, Colorado. Participants can choose between a challenging 100km course with approximately 14,450 feet of elevation gain or a 60km option with about 8,850 feet of elevatio..

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 breathtaking views. Runners will experience significant elevation changes, with the lowest point over 9,000 feet and section..

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 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..

The Run The Rockies Trail Race offers a scenic running experience through the Frisco Peninsula trails, featuring breathtaking views of Dillon Reservoir and the Ten Mile Range. Participants can choose from a 5k, 10k, or half marathon, making it suitable for both beginners and seasoned runners. The ev..

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 set to take place 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 with options fo..

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..