Run Rabbit Run 50 & 100 Mile
Course HighlightsThe Run Rabbit Run takes place across the mountains surrounding Steamboat Springs, starting and finishing at the base of the Steamboat Springs ski area at 6,900 feet. The 50-mile course climbs to the summit of Mount Werner at 10,568 feet, descends into the valley, and then makes a dramatic traverse across the Continental Divide to Rabbit Ears Mountain at 10,500 feet before returning to the ski area base. The 100-mile course additionally circumnavigates Buffalo Pass at 10,300 feet and
Sage Burner Trail Race
Course HighlightsThe Sage Burner Trail Race takes place in the Hartman Rocks Recreation Area just west of Gunnison, Colorado — a landscape utterly unlike the classic Rocky Mountain high-alpine environment. Here the hills are covered in sage brush and the terrain alternates between technical slickrock, smooth flowing singletrack, and doubletrack roads built for speed. The course is described as 'deceptively tough' — rolling hills and punchy climbs in a high-desert climate at approximately 7,700 feet elevation. From the ridgelines, runners
Colorado Marathon
Course HighlightsThe Colorado Marathon earns its reputation as Colorado's fastest downhill marathon with a dramatic point-to-point course that begins in the Rocky Mountain foothills at 6,111 feet in the Poudre Canyon and descends along the Cache la Poudre River all the way to downtown Fort Collins. Runners are bussed to the canyon start before dawn, then run downstream past rushing whitewater, dramatic sandstone canyon walls, and cottonwood groves before emerging onto the agricultural plains and finishing at Washington Park in
Telluride Mountain Run
Course HighlightsThe Telluride Mountain Run is one of the most visually spectacular mountain running events in the American West, set above the jaw-dropping box canyon town of Telluride in the heart of Colorado's San Juan Mountains. Runners navigate old mining roads, technical singletrack, and sweeping alpine tundra over mountain passes and exposed ridgelines, with portions of the course reaching above 13,000 feet. The 65-mile distance — new for 2026 — starts at 6:00 AM from Telluride Town Park and traverses
Imogene Pass Run
Course HighlightsThe Imogene Pass Run is the crown jewel of Colorado's San Juan mountain races. The 17.1-mile point-to-point course climbs from Ouray (7,792 feet) up a historic mining road to the summit of Imogene Pass at 13,114 feet — gaining over 5,300 feet — before plunging 4,800 feet down the other side to finish in the gorgeous mountain town of Telluride. The route passes abandoned mine shafts, crosses alpine tundra covered in late-season wildflowers, and rewards runners with panoramic views
Georgetown to Idaho Springs Half Marathon
Course HighlightsThe Georgetown to Idaho Springs Half Marathon — affectionately known as the GTIS Half — has been a Colorado running institution for nearly five decades. The point-to-point course follows the historic path of the Argentine Central Railroad through the stunning Clear Creek Canyon, connecting the Victorian mountain town of Georgetown to the gold-rush heritage town of Idaho Springs. The route follows the canyon's gentle contours along Clear Creek, offering dramatic rock wall scenery, rushing whitewater, and views of Colorado's
Cherry Creek Sneak
Course HighlightsThe Cherry Creek Sneak is one of Denver's oldest and most beloved springtime running traditions, held annually the last Sunday of April in the vibrant Cherry Creek North neighborhood. Courses of five distances wind through the tree-lined streets of one of Denver's most walkable and stylish districts, passing boutique shops, art galleries, and restaurants. The signature 10-Mile course is the centerpiece for competitive runners, while the 5-Mile, 5K, and 1.5-Mile Sprint options welcome everyone from speedy elites to families
BolderBOULDER 10K
Course HighlightsThe BolderBOULDER is more than a race — it's Boulder's biggest party of the year, drawing over 50,000 participants through the heart of the city on Memorial Day. The 10K course winds through Boulder's eclectic neighborhoods, past live bands, costumed cheerleaders, and lawn-side water stations manned by local characters, before culminating in the stadium finish at CU Boulder's Folsom Field. Runners enter the field to the roar of tens of thousands of spectators and then watch a world-class professional