Cirque Series - Arapahoe Basin

Cirque Series returns to Arapahoe Basin, Colorado, for a high-alpine mountain race. On White River National Forest trails above Keystone, the course runs about 9 miles with roughly 2,411 feet of elevation gain, starting at Mountain Goat Plaza at the base of A-Basin. Racers ascend via summer road to Black Mountain Lodge, taking in world-class views of the East Wall, then encounter new uphill sections toward Zuma Cornice before looping to Lenawee and Montezuma.

The route continues on Half Moon Vista singletrack and finishes via Argentine North Fork into Mountain Goat Plaza, with live music and sponsor swag. Limited to 650 runners; divisions: Sport, Expert, Pro. Visit the organization's website for the most recent information.