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. You’ll find yourself cheered by town revelers as you navigate a crazy gliding costume assemblage… Racers are sometimes forced into making daring passes and depending on their luck, may even get waylaid on a bridge for a moment. Once you make it through town, you are rewarded by pristine tracks and exhilarating vistas throughout the Crested Butte Nordic trail network. If you like normal, you may want to look for another race. If you are up for anything… this is right up your alley!

Typical conditions

For events around January 2027 in Crested Butte, CO, United States: Typical mid-winter / cooler season in this region — dress in layers and check the official page for weather-related changes.

How to prepare

Marathon training typically spans 12–16 weeks with a progressive long run and recovery weeks. Do not invent a course strategy here — check the official site for start waves, cutoffs, and gear rules.

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Getting there

This event is listed in Crested Butte, CO, United States. Confirm the exact start venue, parking, and transit options on the official registration page.

External Event

Registration is handled by the official event organizer

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