Boulder Halloween Events

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 31 Oct 2025

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

Boulder Theater 31 Oct 2025

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 30 Oct 2025

The Official Halloween Bar Crawl - Boulder

The Spotted James 1 Nov 2025

Halloween with B-Love Experience

1535 Pearl St, Boulder, CO, United States, Colorado 80302 31 Oct 2025

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

Red Rocks Amphitheater 31 Oct 2025

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 25 Oct 2025

The Vampire Ball

The Dairy Center for the Arts 31 Oct 2025

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

The Avalon Ballroom, Boulder,co 18 Oct 2025

Halloween Laser Magic & Mysterious Moons

Fiske Planetarium 26 Oct 2025

Choice House Halloween Party 2025

6901 Lookout Rd, Boulder, CO, USA 30 Oct 2025

Fall Bird Walk at Walden Ponds with Front Range Birding

Walden Ponds, Boulder, CO 80301, United States 16 Oct 2025

Halloween Laser Magic & Mysterious Moons

Fiske Planetarium 25 Oct 2025

Waylon Wyatt

Fox Theatre - Boulder 31 Oct 2025

2025 Boulder County Trunk or Treat

Boulder County Sheriff's Office 14 Oct 2025

Boulder Creek Walking Tour

The Boulder Dushanbe Teahouse 26 Oct 2025