Halloween Parties in Boulder

Check out happening halloween parties events all around Boulder, CO

Trick, Treat, Punketry at Trident on Halloween!

Fri, 31 Oct at 06:00 pm Trident Booksellers and Cafe

The Official Halloween Bar Crawl - Boulder

Sat, 01 Nov at 04:00 pm The Spotted James USD 13 to 18

Denzel Curry, Freddie Gibbs & Earl Sweatshirt at Red Rocks Amphitheatre

Fri, 31 Oct at 08:00 pm Red Rocks Amphitheater

Choice House Halloween Party 2025

Thu, 30 Oct at 06:00 pm 6901 Lookout Rd, Boulder, CO, USA Free