Trail Running calendar near Nathrop 2026-2027

Race in the Clouds at Alma Cemetery Meadow offers high country trail running, mountain bike races and weekend camping at 10,600 feet. Choose from a trail half, 10K, multiple bike distances and free kids races for a weekend of alpine adventu..

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..

High Trails Retreat in Buena Vista July 9 to 12 2026 offers daily runs of 10 to 20 miles and an optional Hope Pass or Sawatch 14er climb. Stay riverside, share meals, relax by the river and pick routes with the group.

Run high alpine trails above 10,000 feet at the Silverheels Trail Runs in Como, Colorado, July 10 to 11, 2026. Distances from 10 mile to 100 mile plus a 100k point to point course wind through meadows, aspen groves, creeks, and old mining c..

Take on alpine trails at Grin & Bear It in Crested Butte on July 11 2026, with run and mountain bike distances for all levels. Expect big climbs, sweeping alpine views and a start and finish at Crested Butte Nordic Center.

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.

High Lonesome 100 is a 100 mile mountain ultramarathon in Chaffee County Colorado that loops across alpine passes, the Continental Divide and the Colorado Trail for epic high elevation views. Held July 17 to 18 2026 with a 37 hour cutoff.

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.

Join TransRockies Run Pass to Pub for three days of alpine trail racing from Hope Pass to Red Cliff in Leadville, Colorado, with fully supported camp life, live music, showers and catered meals. Limited to 500 runners July 19 to 21, 2026.

Tackle rugged trails near Pikes Peak in the Pikes Peak Ultra, a scenic trail ultramarathon in Colorado Springs with 20K to 50 Mile options, including summit runs on Mt Rosa for the longer distances. Expect big climbs and sweeping views.

Creede 100 takes place July 25 to 26, 2026 in Creede, Colorado, inviting runners to tackle a rugged, scenic trail course in national forest country. Full support for crews and pacers makes this an epic team friendly ultramarathon.

Summit 200 is a single loop 200 mile mountain ultramarathon from Frisco, Colorado, with sections above 12,700 feet and about 40,000 ft of elevation gain. Expect remote single track, limited aid, a 110 hour cutoff and a 75 runner cap requiri..

Take on high alpine trails at Sheep Mountain Trail Runs in Fairplay Colorado with half marathon, 50k and 50 mile options across dirt roads, forest tracks and technical rocky sections above 10,600 feet. Small field, well stocked aid stations..

Take on alpine trails in Aspen Colorado with three distances 50K, marathon and heavy half, all starting at Rio Grande Park on August 1, 2026. Finishers celebrate at the Duck Derby festival with music, food and awards.

Run the Rockies Trail in Frisco, CO features 5K to half marathon routes on the scenic Frisco Peninsula with lakeshore finishes and reservoir views. Finishers receive a gift and an afterparty with food, music and beer for 21+.

Run the scenic Leadville Trail 10K on August 16, 2026 in historic Leadville, Colorado, tracing the opening miles of the LT100 course at over 9,700 feet. Enjoy a fast out and back on paved and dirt roads with aid at the turnaround and awards..

Tackle the legendary Leadville Trail 100, a 100 mile out and back ultramarathon through the high Colorado Rockies with steep climbs, technical singletrack and alpine passes up to 12,500 feet. Expect epic views, serious altitude and belt buc..

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..

Run Rock Hawk Trail Races at Philip S. Miller Park in Castle Rock with 5K, 10K, 25K and 50K on rolling singletrack and scenic ridge views. Proceeds support open space and the race offers chip timing and live split tracking.

Run 40 miles across the Elk Mountains from Crested Butte to Aspen along the Grand Traverse route with more than 6,000 feet of climbing. A fundraising point to point ultramarathon with aid stations and a post race shuttle.