Trail Running calendar near Larkspur 2025-2026

Ring the Springs on June 20, 2026 showcases scenic high country trail routes at Garden of the Gods, CO. Choose 100K, 50K or 35K; field capped at 400 and registration ends June 15.

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 the Life Time Leadville Trail Marathon or Heavy Half on June 27, 2026, tackling high alpine singletrack and dirt roads through historic mining country up to Mosquito Pass at 13,185 feet. Expect a challenging, possibly snowy race with fu..

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.

Silverheels Trail Runs in Como, Colorado feature distances from 10 miles to 100 miles on high alpine singletrack and fire roads, averaging over 10,000 feet. Rugged scenery, big climbs and thin air make this a true high altitude trail challe..

Join the Life Time Silver Rush 50 Run in Leadville for a high alpine 50 mile out and back plus 15 mile and 5K juniors. With seven aid stations and Leadville Trail 100 Run qualifier spots, this is a true mountain challenge.

Take on the Barr Trail Mountain Race in Manitou Springs, Colorado, a rugged 12.6 miles up to Barr Camp on Pikes Peak terrain and back to the trailhead. Part of the Garden to Peak Challenge, this summer favorite fills fast so register early.

Run a three day stage race across the Continental Divide from Hope Pass to Red Cliff in the Colorado Rockies. Fully supported camps with live bands, mobile showers and on site massage, plus a capped field of 500, make this a high alpine adv..

Pikes Peak Ultra in Colorado Springs offers trail distances from 20K to 50 mile on scenic granite singletrack with sweeping alpine views. Longer routes summit Mt Rosa while cupless aid stations and crew accessible stops keep you moving.

The Summit 200 is a 200 mile loop around Summit County Colorado that climbs into high alpine single track above 12,700 feet. Capped at 100 runners and requiring a prior 100 mile finish, it is a remote, high altitude test of endurance.

Experience high alpine trails above 10,600 feet at the Sheep Mountain Trail Runs in Fairplay Colorado on August 1, 2026. Choose from half marathon, 50k or 50 mile distances for a rugged, scenic challenge.

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.

Take on the iconic Leadville Trail 100 Run, a 100 mile ultramarathon through the Colorado Rockies that climbs to Hope Pass and delivers breathtaking high altitude views. A true test of endurance and grit.

Run mountain trails in Fraser, Colorado on August 22, 2026 with a scenic high elevation half marathon or a friendly 5K along dirt roads. All proceeds benefit the Shining Stars Foundation and dogs on leash are welcome.

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..

Challenge yourself on scenic Ridgeline Trail at Rock Hawk Trail Races on August 29, 2026 in Philip S. Miller Park, Castle Rock, CO. Choose from 5K to 50K distances, enjoy rolling terrain and finisher awards while supporting local trails.

Run the Cirque Series at Arapahoe Basin: a scenic 9.4 miles with 2,211 ft of climbing on high alpine trails around Montezuma and Little Lenawee. Finish in Mountain Goat Plaza with live music, food, and festival vibes.

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.