Trail Running calendar near Larkspur 2026-2027

The Freakin Freezin 5K - Denver will take place in Civic Center on Sunday 25 January 2026. You can run 5 kilometers.

The Sourdough Snowshoe Race in Nederland, CO is a donation based backcountry event offering 18K and 30K routes where snowshoes are required. Enjoy rugged alpine scenery with a warming tent and hot drinks at the finish.

Join the Super Sunday 5K on February 8, 2026 in Littleton for a scenic run along the Mary Carter Greenway. Celebrate at a post race party at Breckenridge Brewery Farmhouse with 20% off food and drinks and community fun.

A two-person partner race on Virginia Canyon road in Idaho Springs, CO, held on Valentine’s Day. Runners each complete a roughly 12-mile out-and-back; team time is the sum of both individual times and multiple awards are offered.

Stories Trail Runs at Cheyenne Mountain State Park offer scenic, challenging multi loop trail races and timed ultras on Feb 21 and 22, 2026. Choose distance races or 6 hour and 15 hour timed options in a small field for rugged Colorado trai..

Join the 21st Run Through Time Trail Marathon and Half Marathon in Salida Colorado on March 14 2026 for scenic high country trails and Arkansas Valley views. Limited fields and varied distances make this a memorable spring trail challenge.

Mountain Ridge Trail Race on Saturday April 11 2026 in Highlands Ranch Colorado starts and finishes at Mountain Ridge Middle School. Choose 21 mile, half marathon, 10 km or 5 km on mostly dirt single track with rolling climbs.

Join the Rattler Trail Race in Palmer Park, Colorado Springs, where singletrack trails wind through sandstone bluffs and offer panoramic views of the city and Pikes Peak. Choose from 50K, 25K, 10K or 5K on technical but runnable terrain.

Experience cliffside trail running along the Royal Gorge rim on April 25, 2026 in Cañon City, Colorado, with rocky technical trails and epic views over the Arkansas River. Distances from a fun 5K to a tough 50K suit all trail runners.

Run the Greenland Trail Races in Larkspur, Colorado on May 2, 2026 with 50K, 25K, 8 Mile and 4 Mile options and the 2026 RRCA National 50K Championship. Scenic dirt trails wind through ponds, oak hills and offer Pikes Peak views.

Niwot's Challenge is a by invitation only endurance event near Sedalia, Colorado that prizes off trail navigation and self reliance over racing. Limited to 40 entrants, it offers routes up to 100 miles for experienced wilderness runners.

Run among the iconic red rock spires of Garden of the Gods with distances from 5K to a Double Take or 9.5 mile course. Traffic free roads and trails promise stunning views of Pikes Peak and formations like Siamese Twins and Balanced Rock.

Take on the Collegiate Peaks Trail Run in Buena Vista Colorado with 25 or 50 mile options through stunning high country. Mark the 36th anniversary with a memorable mountain trail challenge.

Valkyrie Trail Race is a trail event for women at Cheyenne Mountain State Park with distances from 4 miles to 50K on scenic singletrack, technical rock sections, and mountain views. Pick a distance and enjoy a mountain trail challenge.

Tackle scenic high alpine trails around Rampart Reservoir on May 16 with distances from 15K up to an epic 55 mile test of endurance. Expect rugged singletrack, big elevation gains, aid stations, a 60K shuttle and finisher awards.

Celebrate Memorial Day weekend with the Spirit Trail Race in Buena Vista, Colorado, a scenic trail event with marathon, half marathon and 9k options. Start in town square, enjoy Paddlefest fun, and support local nonprofits.

Run the North Fork 50 Ultras in Buffalo Creek, Colorado on May 30, 2026, with 50 mile and 50K options along scenic soft surface singletrack through ponderosa pine and granite. Enjoy challenging trails while supporting local nonprofits.

The Great Divide Ultra is a weekend trail festival in Divide, Colorado, June 6-7, 2026, featuring 25k, 50k, 100k and 100 mile looped races through Mueller State Park with rolling meadows and Pikes Peak views. A Dark Divide Night Run adds ev..

Aiden's Adventure 5K on June 6 in Colorado Springs is a family friendly run and kids dash honoring Aiden while benefiting local charities. Enjoy scenic trails, free shirts for early registrants, carnival games and food trucks.

Scenic dirt trails around Barr Lake offer looped courses with continuous lake and front range views. Distances from 5K to 50K suit beginners to ultrarunners, with aid stations on longer routes and a cupless sustainability focus.