Cirque Series - Arapahoe Basin

The Cirque Series at Arapahoe Basin is a thrilling mountain running event set for September 6, 2025. Participants will tackle a challenging 9.2-mile course with an elevation gain of 2,411 feet, starting from the base at 10,780 feet. The route features stunning views and a mix of established trails in the White River National Forest, including technical sections and scenic singletrack.

Runners can compete in three divisions: Sport, Expert, and Pro, with prizes awarded for top finishers in each category. The event also includes a vibrant finish area with live music and food, making it a festive celebration for all participants. Visit the organization's website for the most recent information.