Trail Running calendar near Mount Princeton 2026-2027

Explore Colorado's peaks in this series of five mountain races. Run four scenic half marathons and a challenging 25K across the state from June to September. Participants can choose to tackle three, four, or all five events.

Event Information The Leadville Trail Marathon & Heavy Half Marathon takes place in Leadville, Colorado. The event offers two distances: a 26.4-mile trail marathon and a 15.46-mile "Heavy Half." Course Details The marathon cou..

Celebrate the Fourth of July at over 10,000 feet in North America’s highest city. This 5K run and walk through downtown Leadville supports local youth athletics and begins just before the annual holiday parade.

Celebrate 50 years of history at the Vail HillClimb, a 12.2 km mountain race gaining over 2,000 feet of elevation. Run from Vail Village to the scenic Mid-Vail finish line for incredible views and commemorative awards.

The 1876 Centennial Run in Snowmass Village offers four unique distances, from a 3.76k to an 18.76k challenge. The event starts and ends at the New Belgium Ranger Station and is part of the Colorado Brewery Running Series, with proceeds sup..

Experience a long weekend of trail running and hiking in Buena Vista, Colorado. Enjoy daily adventures ranging from 10 to 20 miles, a group peak ascent, and riverside lodging in the heart of the Sawatch Range.

High elevation trail runs in Como, Colorado on July 10 and 11, 2026. Distances range from 10 mile to 100 mile and include a point to point 100k and a nonrepetitive 100 mile route through alpine meadows, mining sites and national forests.

Crested Butte's oldest trail challenge offers a classic 15k run and a 25k loop. A mountain bike event joins the lineup, tackling a rugged 14.8-mile course. This low-frills event focuses on the trail experience over awards.

Event Overview The Silver Rush 50 Run is a running event scheduled for July 11, 2026. The event features multiple race distances: a 50-mile run, a 15-mile run, and a 5K Juniors run. There is also a Silver King & Silver Queen challenge f..

The High Lonesome 100 is a 101-mile mountain ultra through the Sawatch range. Runners traverse the Continental Divide, pass ghost towns, and climb over five alpine passes with 23,500 feet of total gain. This loop course offers a mix of sing..

Run scenic mountain trails around Aspen Snowmass at the Audi Power of Four Trail Run on July 18, 2026. Choose from 10K, 25K or an epic 50K and enjoy challenging terrain, alpine views and Audi supported race day energy.

Experience high altitude trail running at 10,000 feet on the scenic Vail Mountain in Colorado. Choose between a 5K or 10K course featuring mountain views, wildflowers, and a unique gondola ride to the starting line.

Experience a historic mountain run in Manitou Springs. This 12.6 mile course ascends Pikes Peak to an elevation of 10,200 feet before descending to the finish at the Barr Trailhead.

The TransRockies Run is a three-day stage race through the Colorado Rockies, from Hope Pass to Red Cliff. Choose between the 51-mile Full Pint or the 35-mile Half Pint. Runners finish each day at a fully supported camp with meals, showers,..

The Pikes Peak Ultra on July 25, 2026, features trail races from 20K to 50 miles in Colorado Springs. Starting at Bear Creek Park, the course includes views of Pikes Peak and a summit of Mt. Rosa for longer distances. Organized by Mad Moose..

An ultra running event in Creede offering 50 mile and 100 mile courses across the San Isabel and Rio Grande National Forests over two days, organized by Tempest Adventures under a USDA Forest Service permit.

Course and Terrain The Summit 200 is a 200-mile single-loop ultramarathon in Summit County, Colorado. The non-repetitive course utilizes hiking trails, 4WD roads, and recreation paths, with the majority being single-track trail and infreque..

Experience high altitude trail running at an average elevation of 10,600 feet in Fairplay, Colorado. Choose between a technical ultra marathon or a flowing half marathon through the scenic South Park Valley.

The Aspen Backcountry Maratons return on August 1, 2026 with three distances: 50K, marathon, and "heavy half" marathon. Participation requires a CORSAR search and rescue card, available online. This event is held alongside the Rotary Club A..

Experience a challenging 4.3 mile uphill climb on Vail Mountain featuring over 2,000 feet of elevation gain. This scenic singletrack race finishes at Mid Vail with stunning views and post run refreshments for all participants.