One of the biggest ski races in the state! The Alley Loop is not your typical Nordic Marathon. It stands both as a premier American Birkebeiner Qualifying event, in addition to being Crested Butte’s most outrageous costume party of the year! The course winds its way through snowy streets, alleyways and narrow bridges through the heart of downtown Crested Butte.

Event Update 1/27/2026:

Crested Butte got 6-8" of snow last weekend and has enough snow to host the Alley Loop races on their normal courses with a slightly shortened loop through town. 

If you are in town for the weekend and want another opportunity to race, they’re also hosting a low-key skiathlon race on Sunday (10k/6k/2k options) as part of our community race series. 

Alley Loop registration is open through Friday here, and registration for the Skiathlon on Sunday is linked here.