Leadville Trail 100
The Leadville Trail 100 Run is a legendary 100-mile ultramarathon through the Rocky Mountains, known for its extreme elevation and "Grit, Guts, and Determination" ethos. Course Highlights The "Race Across the Sky" follows a brutal out-and-back course through the heart of the Colorado Rockies, featuring over 15,000 feet of elevation gain. Runners start at 10,200 feet in Leadville and face grueling climbs over Sugarloaf Pass and the notorious Powerline section. The true crux of the course is the double ascent of Hope
Western States 100
The Western States 100-Mile Endurance Run is the world's oldest and most prestigious 100-mile trail race, traversing the rugged Sierra Nevada mountains from Olympic Valley to Auburn, California. Course Highlights The course begins at Olympic Valley, climbing 2,550 feet in the first 4.5 miles to Emigrant Pass. From there, runners traverse the high country of the Granite Chief Wilderness, following the historic Western States Trail. The route plunges into the deep, sweltering canyons of the American River drainage, passing through legendary mining
Marathon des Sables
The Marathon des Sables is a legendary 250km, six-stage ultramarathon through the Moroccan Sahara, widely considered the toughest footrace on Earth. Participants must be self-sufficient, carrying all their food and equipment while navigating extreme desert terrain and temperatures. Course Highlights The legendary course spans approximately 250 kilometers of the Moroccan Sahara, starting and ending near the host city of Ouarzazate. Runners traverse a punishing variety of desert landscapes, including vast sand dunes (ergs), rocky plateaus (djebels), and dried-up riverbeds (oueds). The elevation
UTMB Mont-Blanc
The HOKA UTMB Mont-Blanc is the world's most prestigious trail running race, featuring a 171km circuit around Europe's highest peak. Course Highlights The UTMB course is a legendary 171km loop around the Mont-Blanc massif, crossing through France, Italy, and Switzerland. Starting in Chamonix, runners tackle approximately 10,000 meters of positive elevation gain. Key landmarks include the steep ascent of Col du Bonhomme, the technical Grand Col Ferret, and the breathtaking views from Lac Combal. The terrain varies from lush alpine meadows to
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