Cirque Series - Arapahoe Basin
Keystone, United States • 5 Sep 2026
Cirque Series - Arapahoe Basin
The Cirque Series - Arapahoe Basin takes place in Keystone, Colorado. This trail running event features a singular course distance across different registration categories. Participants navigate a route that covers 9.4 miles and includes a total vertical gain of 2,211 feet.
The event offers three distinct divisions for participants:
- Pro Division: A 9.4 mile trail race with cash prizes for the top three finishers.
- Expert Division: A 9.4 mile trail race with gear prizes for the top three finishers.
- Sport Division: A 9.4 mile trail race for beginner and intermediate levels with gear prizes.
The race is capped at 700 participants. Timing is conducted using disposable chips attached to the back of the runner bibs. Hydration stations are located along the course and at the finish line to provide water for all athletes.
In addition to individual race rankings, the event is part of a larger series where points are awarded to the top 20 finishers. These points contribute to an overall season standing. Special acknowledgments are provided for the youngest participant, the oldest participant, and the runner who finishes exactly in the middle of the pack. The event operates under leave no trace principles to preserve the mountain environment. Visit the organization's website for the most recent information.