Possum’s Revenge Trail Race
Course HighlightsPossum's Revenge takes place on the Possum Kingdom Lake Hike and Bike Trail, starting and finishing at Bugg Beach on the shores of one of Texas' most scenic lakes. The main loop is 17.35 miles, delivering approximately 1,460 feet of elevation gain per lap. The trail is a masterpiece of variety — rocky scrambles, sandy stretches, rooted singletrack, technical climbs, and rolling ridges with panoramic views of the lake's blue-green water and cedar-studded hillsides. All distances start and finish
HOKA Bandera Endurance Trail Race
Course HighlightsThe Bandera course is legendary for its brutality and beauty in equal measure. Set in the Hill Country State Natural Area (10600 Bandera Creek Rd, Bandera, TX), the main 50K loop covers roughly 3,300 feet of elevation gain — and equal loss — over trails thick with limestone rocks, sotol plants, steep gnarly climbs, and breathtaking Hill Country vistas. The 100K is two full loops (6,600 ft total gain). The 25K starts identically before taking a cutover after Equestrian
HRCA Backcountry Wilderness Half Marathon
Course HighlightsThe HRCA Backcountry Wilderness Half Marathon is one of the Denver metro area's most popular trail half marathons, set within the stunning Highlands Ranch Backcountry Wilderness Area in Douglas County. The 13.1-mile course winds through the Douglas County East/West Trail and the wilderness backcountry on a mix of singletrack, rolling hills, and open-sky ridgelines with breathtaking panoramic views of the Front Range. The trails traverse native grasslands, ponderosa pine forests, and open meadows that are home to deer, foxes,
Crested Butte Ultra
Course HighlightsThe Crested Butte Ultra is a showcase of the extraordinary terrain surrounding one of Colorado's most beloved mountain towns. Three distances — 35K, 55K, and 50 Mile — traverse the Gunnison National Forest on lollipop-loop courses that combine wide-open mountain meadows blanketed with wildflowers at lower elevations, heart-pumping climbs to dramatic mountain ridgelines, and single-track trails through aspen groves that glow gold in late September. The course elevation ranges from approximately 7,500 to 12,500 feet across the 50-mile distance,
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
Quad Rock 50 & 25 Mile
Course HighlightsThe Quad Rock 50 and 25 mile trail races take place entirely on the premium singletrack trails of Lory State Park and Horsetooth Mountain Park, just west of Fort Collins in the northeastern Colorado Rockies. The 25-mile course features three major climbs and descents totaling over 5,500 feet of vertical gain on 85% singletrack and 15% dirt road, running clockwise from Soldier Canyon. The 50-mile course runs the 25-mile loop twice in opposite directions, accumulating over 11,000 feet of
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
Vail Hill Climb
Course HighlightsThe Vail HillClimb is one of Colorado's most storied mountain running traditions, celebrating its 50th anniversary in 2026. The 12.2K (7.6-mile) course is a pure uphill race from the base of Vail Village at 8,160 feet to Mid-Vail at 10,254 feet — a relentless 2,128-foot climb. The route follows the same gravel and dirt service road that has been used since the race was founded in 1976, with 80% dirt/gravel and 20% paved sections. Runners work through dense spruce-fir
Aspen Backcountry Marathon
Course HighlightsThe Aspen Backcountry Marathon is one of Colorado's most stunning trail races, utilizing the world-class trail network that surrounds the legendary resort town of Aspen. All three distances — the 50K, marathon, and heavy half-marathon — run almost exclusively on single-track dirt trails with diverse terrain: challenging climbs through aspen groves, high ridge traverses with panoramic views of the Elk Mountains, and technical descents back into the valley. The 50K distance includes an out-and-back to the McNamara Hut, part