Trail Running calendar near Larkspur 2025-2026

Ring the Springs offers 35K, 50K and 100K trail distances through Garden of the Gods and Pike National Forest, starting at Rock Ledge Ranch. Expect big climbs, varied terrain, aid stations and stunning mountain views.

Race in the Clouds at Alma Cemetery Meadow is a high country weekend of mountain bike, trail and off road duathlon racing at 10,600 feet. Multiple distances, youth events and on site camping create a true alpine festival vibe.

Run high alpine trails above Leadville, Colorado on June 27, 2026, with a rugged marathon and a shorter Heavy Half reaching Mosquito Pass at 13,185 feet. Expect old mining roads, stunning mountain views and a true high country challenge.

Celebrate July 4 with Pueblo's Firecracker 5k along the Arkansas River Trail in City Park. Family friendly fun with music, Kona Ice, costume contests and proceeds supporting local running and youth grants. Medals for the first 350 finishers..

High Trails Trail Running Retreat in Buena Vista Colorado, July 9 to 12, 2026 offers guided trail outings of 10 to 20 miles and a possible group ascent of Hope Pass. Expect coaching, shared meals, and stunning mountain views.

Explore alpine single track at the Silverheels Trail Runs in Como, Colorado on July 10 and 11, 2026, with distances from 10 miles to 100 miles. Limited entries, stunning mountain views, and a buckle for 100 mile finishers.

Experience Leadville's Silver Rush weekend in July 2026 with a rugged 50 mile out and back, a 15 mile option and a juniors 5K, plus a combined run and bike challenge. Enjoy high alpine views, big elevation and well stocked aid.

Tackle the iconic Barr Trail Mountain Race, a scenic 12.6 mile climb and descent from Manitou Springs toward Pikes Peak. This summer Front Range classic delivers rugged alpine views and counts toward the Garden to Peak Challenge.

Run three unforgettable stages across the Continental Divide near Leadville, Colorado, with epic fourteener views and campsite camaraderie each night. Choose the 51 mile Full Pint or 35 mile Half Pint, with limited entry for 500 runners.

Take on Pikes Peak Ultra in Colorado Springs on July 25, 2026, with distances from 20K to 50 Mile starting and finishing at Bear Creek Regional Park. Expect scenic trail climbs, Pikes Peak views and a true mountain test for trail runners.

Take on the Summit 200, a breathtaking 200 mile loop around Summit County, Colorado that climbs above 12,700 feet and delivers about 40,000 feet of gain. Expect remote high altitude single track, sparse aid and an epic endurance challenge.

Tackle high alpine trails at Sheep Mountain Trail Runs in Fairplay, Colorado on August 1, 2026, with options for a half marathon, 50k, or 50 mile. Expect rocky county and forest roads, aid stations, big views, and a supportive festival vibe..

Run the Rockies Trail in Frisco, Colorado offers 5k, 10k and half marathon on scenic single track and dirt trails. Take in views of Dillon Reservoir and the Ten Mile Range with a lakeshore finish to cheer your arrival.

The Leadville Trail 100 Run is a legendary 100 mile ultramarathon in the Colorado Rockies that tests runners at high altitude with climbs to Hope Pass and sweeping mountain trails. Iconic belt buckles await finishers who make the 25 or 30 h..

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.

Challenge yourself on the scenic rolling trails of Philip S. Miller Park in Castle Rock at Rock Hawk Trail Races on August 29, 2026, with 50K, 25K, 10K and 5K distances. Organized by Aravaipa Running, the event supports local open spaces an..

Challenge yourself on the Cirque Series at Arapahoe Basin on September 5, 2026 in Keystone, Colorado. This scenic 9.4 mile mountain course with 2,211 ft of climbing delivers steep, technical trail and big alpine views in a capped field.

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.

Race to the summit of Pikes Peak on the historic Barr Trail in Manitou Springs, Colorado. Choose the full marathon up and down the 14,115 foot peak or the uphill Ascent for an epic alpine challenge and unforgettable views.

Race to the summit of Pikes Peak on the historic Barr Trail in Manitou Springs, Colorado. Choose the full marathon up and down the 14,115 foot peak or the uphill Ascent for an epic alpine challenge and unforgettable views.