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Cirque Series – Arapahoe Basin

Sep 05, 2026 at 10:00 AM

Arapahoe Basin, Arapahoe Basin CO, 80435, USA

ATRA race member Feature this race

The course begins at 10,780′ ft, starting at the base of Arapahoe Basin and makes its way up to the International Traverse and then up Exhibition Trail to Black Mountain Lodge. At Black Mountain Lodge the racers will climb the summer road for a short distance and then climb up the ridge to the world famous Pallavicini Chair. From the top of the Pallavicini chair they will continue their way up towards Lenawee chair. Just before the racers reach the summit they will veer to the right and run along the Zuma cornice, which has some of the best views Summit County has to offer. They will run down to tree line and then turn around and run back along the Zuma cornice. Once they are back at the top they will run out towards the North Pole hiking gate which will take them to the top of Little Lenawee Peak. Once they summit Little Lenawee they will head back the same way and connect to the Humbug trail. At the bottom of Humbug they will reconnect with the summer road and run this until they hit Black Mountain Lodge. At the lodge they will head left down into exhibition and follow an old trail through 13 cornices and lower international which will then connect to the Argentine North Fork Trail with a finish in the base area, where there will be live music and food for all. The race course is located on the White River National Forest.

**course subject to change as necessary

Event History

2026
Sep 05, 2026
2025
Sep 06, 2025
2024
Sep 07, 2024
2023
Sep 09, 2023
2022
Sep 10, 2022
2021
Sep 04, 2021
2020
Aug 29, 2020
2019
Aug 10, 2019
2018
Aug 18, 2018