Ultramarathon Race Calendar and Guides

Angeles Crest 100 is a Southern California mountain 100-miler through the San Gabriels, known for heat, altitude swings, and old-school endurance.

Badwater 135 crosses Death Valley to Mt. Whitney, asking runners to cover 135 road miles, extreme heat, and three major climbs from start to finish.

Black Canyon 100K runs point-to-point through central Arizona desert from Mayer toward Phoenix, with fast net downhill miles and rugged trail sections.

Canyons 100K is a competitive Auburn-area ultra with China Wall start lines, canyon descents, UTMB Major status, and Western States stakes in spring.

Canyons 100M is a Sierra foothills UTMB World Series Major from China Wall to Auburn, built around runnable climbs, canyons, and Western States terrain.

CCC runs 101 km from Courmayeur to Chamonix, pairing 6,050 meters of climbing with a high-demand UTMB week 100K final across three countries.

Cocodona 250 is a multi-day Arizona trail ultra from Black Canyon City to Flagstaff, with 250-plus miles, massive climbing, and live tracking demand.

Comrades Marathon is South Africa's historic 89 km road ultra between Durban and Pietermaritzburg, with strict qualifying and a 12-hour cutoff.

Hardrock 100 is a 101.8-mile San Juan Mountains loop from Silverton with 33,441 feet of climbing, high passes, and a remote alpine finish at the rock.

Javelina Jundred is a desert 100-miler at McDowell Mountain, blending rolling Sonoran singletrack, loops, heat management, and a party finish.

Leadville Trail 100 Run is a high-altitude Colorado out-and-back from Leadville, crossing Hope Pass and topping out near 12,500 feet in thin air.

OCC covers 60 km from Orsieres to Chamonix, delivering a sharp UTMB week mountain race with 3,500 meters of climbing and a fast 50K-final field.

UTMB is the 174 km Mont-Blanc loop from Chamonix, a 100M final with 9,900 meters of climbing, major crowds, and a full alpine night out for the field.

Western States 100 is a landmark point-to-point California trail ultra from Olympic Valley to Auburn, with huge climbs, lottery entry, and race-week tracking.