Trail Running calendar near Old Town 2025-2026

Experience scenic high altitude trail running in Fraser, Colorado at the Byers Peak Stampede Half Marathon and 5K, a fundraiser for the Shining Stars Foundation. Tackle a challenging half above 9,500 ft or enjoy a dirt road 5K.

Staunton Rocks! Marathon and Half deliver high altitude singletrack through Staunton State Park, offering sweeping mountain views, alpine wildlife, and serious vertical gain. With just 150 spots per distance, this rugged trail run fills fas..

Ned Ned Run in Nederland Colorado blends scenic trail and road running through the foothills, offering a half marathon, 10K and fun 5K for all abilities. Family friendly and costumes encouraged, with leashed dogs welcome in the 5K.

Run alpine trails and rolling hills at Snow Mountain Ranch Trail Running Festival in Granby CO on September 12, 2026. Choose 50K, 33K, half marathon, 10K or 5K and enjoy sweeping mountain views and friendly aid stations.

Experience the Black Squirrel Half Marathon at Lory State Park near Fort Collins on September 12, 2026. This 13.5 mile trail course features rolling singletrack with sweeping reservoir and mountain views and a pint glass plus pancake breakf..

Red Feather Trail Jamboree in Red Feather Lakes Colorado offers a weekend of scenic singletrack racing, camping and a community dinner at Ben Delatour Scout Ranch. Choose 50 Mile, 50K or Half Marathon, capped at 500 runners.

Run singletrack and crusher fine trails at Bear Creek Lake Park during the Bear Chase Race festival on October 3 to 4, 2026. Distances from 5K to 100K offer looped courses, plentiful aid stations, and a welcoming trail community.

Explore scenic Front Range single track trails at Indian Creek Campground near Sedalia Colorado with distances from 5 miles to 50 miles. Enjoy fall views, a race shirt and finisher medal in a small field.

Tackle scenic single track trails at Bear Creek Lake Park in Lakewood CO with 5 km, 15 km, a 5 plus 15 double and a kids 1 km. Enjoy race swag and a pancake breakfast amid varied terrain and rolling hills.