Get ready to tackle a 9.4-mile mountain running challenge at Arapahoe Basin with 2,211 feet of elevation gain as part of the Cirque Series in Keystone, CO. Compete in Sport, Expert, or Pro categories with prizes awarded after each race and for overall series winners—Pro athletes can earn up to $1,000 cash per race, while Expert and Sport competitors win gear prizes ranging from $100-$400. Special recognition awards celebrate the youngest competitor, oldest competitor, race MVP, and middle-of-the-pack finisher, and with a 600-runner cap, early registration is recommended.