Autumn Onion 5K Costume Race
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Autumn Onion : Halloween costume race in Montpelier
Autumn Onion is a Halloween costume race hosted by Onion River Outdoors that takes place in downtown Montpelier on Saturday, October 31, 2026. The event invites participants to run or walk through the downtown area while wearing Halloween costumes. All ages and abilities are welcome.
The event includes costume prize categories such as Funniest Costume, Most Creative Costume, Most Vermont-y Costume, Best Kid's Costume, and Most Committed to Running in an Uncomfortable Costume. Day-of race registration will be available. The organizer shares results and costume highlights from previous years and recognizes top finishing times and costume winners. Visit the organization's website for the most recent information.
