All Coloween 2025 guests are invited to participate in Denver’s biggest Halloween costume contests
Coloween 2025 is the best place to be in Denver, Colorado, for Halloween. Check out some of the past year’s winners and amazing costumes in our gallery, and learn more about contest rules and registration.
Costumes will be judged by three criteria: creativity, difficulty, and authenticity.
The top 10 finalists will move on to the finals held at midnight, where the audience will vote for the winners!
MUST PRE-REGISTER BEFORE 5 PM, October 31th for a chance to be apart of the Top 10 invited to participate during the event, Please Pre-Register Here.
To enter the Halloween costume contest, simply snap a photo of you in your awesome costume, and text a picture of the photo to the phone number we will send after you pre-register!
Our panel of three judges will review submissions between 5 PM and 8 PM. The Top 20 Best Costumes of 2025 will be notified via text and invited to compete in round two, which will be held from 9 PM to 11 PM on the main stage.
Our team of judges will carefully assess all entries right there at the event. If your costume stands out and you’re chosen as a finalist, we’ll send you a text inviting you to join us on the main stage for audience participation pick the winner!
Finalists must meet back at the contest table by 11:45 in order to participate in the finals. NOTE: If you have not received a text message by 11:15, then you were not selected as a finalist.
Once all finalists have checked in, they will be escorted to the runway one by one. Each finalist will have the opportunity to showcase their costume and energize the crowd to encourage votes.
Our Costume Contest host will bring all contestants to the stage and ask the crowd to “cheer” for their favorite costume. The three finalists receiving the loudest responses from the crowd will advance to the final round.
The top three finalists will have one last chance to convince the crowd they deserve to win. The contestant who receives the loudest response will be named Coloween’s 2025 Costume Contest Winner
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