Leadville
Trail Running Calendar near Leadville 2026-2027
Explore the top trail runs near Leadville for 2026-2027! We've gathered 20 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
Trail races of 5K, 10K, and half marathon on Frisco Peninsula trails with lakeshore finishes at Dillon Reservoir on August 8, 2026.
A traditional pack-burro race in Leadville, Colorado at over 10,000 feet where each team is one runner and one burro carrying mining tools. The long course is about 21 miles and a shorter 6 to 8 mile course is planned.
Trail run on August 12, 2026 at Carter Park in Breckenridge offering short and long course entries with adult youth and non binary categories.
A 10K out and back on the first and last 3.1 miles of the LT100 Run in Leadville, featuring high altitude terrain and one aid station at the turnaround.
A 100 mile out-and-back ultramarathon in Leadville with over 15,000 feet of ascent, high alpine passes, 11 aid stations, a lottery entry and belt buckle finish traditions.
A 5k trail run at Copper Mountain starting at 11,000 feet, held during the Union Peak Festival with music and festival activities afterward.
September 2026
The Cirque Series at Arapahoe Basin on Sept 5, 2026 is a 9.4 miles mountain trail race with 2,211 ft of ascent on approved White River National Forest trails. The field is capped at 600 runners and includes a branded hat, bib and medal.
Trail Sisters Women's Half Marathon and 10K in Buena Vista, Colorado, feature trail courses through sagebrush and ponderosa pines with views of the Collegiate Peaks, and offer both group and solo participation options.
Experience desert style single track and forest roads with views of the Collegiate Peaks in Buena Vista. Choose between 50k or 30k distances as part of the multi sport 14er Fest.
A half marathon from Fanny Hill in Snowmass along the Government Trail through aspen groves to Koch Lumber Park in downtown Aspen.
A three-day Oktoberfest on Main Street in Breckenridge with collectible steins, live music, an Oktoberfest 5K, family Kid Zone and local brews.
A fall trail event in Buena Vista, Colorado on September 27, 2026 offering a 14K trail race with over 500 feet of elevation gain and a 5K along the Arkansas River. Both races start and finish at Vendor Village near the Eddyline Beer Garden.
October 2026
November 2026
Celebrate the holiday with a scenic run in Buena Vista. Choose between a standard 5K race or a free 1 mile family fun run suited for all participants in Colorado.
May 2027
A trail race in Buena Vista on May 30, 2027 offering marathon, half-marathon and 9k distances at the South Main Town Square. The event coincides with CKS Paddlefest and donates to several local nonprofit organizations.
June 2027
A three day dirt festival in Alma, Colorado at 10,600 feet featuring mountain bike races, trail running, an off road duathlon, free kids races, and weekend camping in an alpine meadow.
July 2027
High altitude trail races in Como and Grant, Colorado on July 9 and 10 2027, offering multiple distances including a point to point 100k and a 100 mile with qualifying rules.
Three day stage race offering Half Pint and Full Pint options July 26 to 28 2027 across three stages with published race guide and support services.