Halloween events in Boulder

Check out happening halloween events all around Boulder, CO

Liquid Sky Floyd: Dark Side of the Rainbow

 Fri, 31 Oct at 10:00 pm Fiske Planetarium

Candlelight: Halloween Classics | Boulder

 Sat, 25 Oct at 08:45 pm St. John's Episcopal Church, Boulder, CO

Melvin Seals & JGB feat. Liquid JPEG Halloween Light Show (2 Nights!) | Boulder Theater

 Fri, 31 Oct at 08:00 pm Boulder Theater

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

Liquid Sky Floyd: Dark Side of the Rainbow

 Thu, 30 Oct at 08:30 pm Fiske Planetarium

Halloween with B-Love Experience

 Fri, 31 Oct at 09:00 pm 1535 Pearl St, Boulder, CO, United States, Colorado 80302

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

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

Liquid Sky Floyd: Dark Side of the Rainbow

 Sat, 25 Oct at 10:00 pm Fiske Planetarium

The Vampire Ball

 Fri, 31 Oct at 08:00 pm The Dairy Center for the Arts

Anthropology and Geography Do Halloween! Death, Disease & Disasters

 Tue, 07 Oct at 06:00 pm Eddy 212

Choice House Halloween Party 2025

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

Halloween Laser Magic & Mysterious Moons

 Sat, 25 Oct at 01:00 pm Fiske Planetarium

Waylon Wyatt

 Fri, 31 Oct at 05:00 pm Fox Theatre - Boulder

Fall Bird Walk at Walden Ponds with Front Range Birding

 Thu, 16 Oct at 05:30 pm Walden Ponds, Boulder, CO 80301, United States

2025 Boulder County Trunk or Treat

 Tue, 14 Oct at 04:00 pm Boulder County Sheriff's Office Free

Boulder Creek Walking Tour

 Sun, 26 Oct at 02:30 pm The Boulder Dushanbe Teahouse USD 31

Halloween Laser Magic & Mysterious Moons

 Sun, 26 Oct at 02:30 pm Fiske Planetarium

Swingin' Saturdays Costume Party! Live Swing with Flatirons Jazz Orchestra!

 Sat, 18 Oct at 07:00 pm The Avalon Ballroom, Boulder,co