Cirque Series - Arapahoe Basin, CO 2026

The race.

The Cirque Series at Arapahoe Basin takes place on September 5, 2026, in Keystone, Colorado. The primary race distance is 9.4 miles with 2,211 feet of elevation gain. The event includes three competition categories—Sport, Expert, and Pro—with prizes awarded at each race and for overall series standings. Cash prizes for Pro placements range from $1,000 for first place to $150 for third place each race, while Expert and Sport categories receive gear prizes. The race is capped at 600 runners. On-course hydration stations and finish-line refreshments are provided for all participants.