Boulder Halloween Events

Rocky Horror Film Screening

2525 Frontier Avenue, Unit A, Boulder, CO, United States, Colorado 80301 23 Oct 2025

Ghosts of the Junkyard: Kids Halloween Party

2525 Frontier Avenue, Unit A, Boulder, CO, United States, Colorado 80301 26 Oct 2025

5th Annual Motown Haunted Prom - Halloween Dance Party

Roots Music Project 31 Oct 2025

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 31 Oct 2025

PiCatsso Paint Night - Paint With Cats!!!

Purrfect Pause Cat Cafe 24 Oct 2025

Convergence 19

1543 Pearl St, Boulder, CO 80302, United States 1 Nov 2025

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

Boulder Theater 31 Oct 2025

Halloween Carnival and Trunk or Treat

2200 Broadway St, Boulder, CO, United States, Colorado 80302 19 Oct 2025

The Vampire Ball

The Dairy Center for the Arts 31 Oct 2025

The Official Halloween Bar Crawl - Boulder

The Spotted James 1 Nov 2025

Pups & Pumpkins Harvest Gathering

Ember & Ice Boulder 25 Oct 2025

Waylon Wyatt

Fox Theatre - Boulder 31 Oct 2025

Candlelight: Halloween Classics | Boulder

St. John's Episcopal Church, Boulder, CO 25 Oct 2025

Fridays Are For Us: Monthly Collaboration/Co-Working for Value-Driven Orgs!

1206 Euclid Ave 31 Oct 2025

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

Red Rocks Amphitheater 31 Oct 2025

HAUNTED BEATS Halloween PARTY

Roots Music Project 1 Nov 2025

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 25 Oct 2025

Trick, Treat, Punketry at Trident on Halloween!

Trident Booksellers and Cafe 31 Oct 2025

Holiday Minis at Childish Things in Boulder

Childish Things 25 Oct 2025

Halloween Carniverous Bog Workshop at Moss Houseplants

3008 Folsom St 25 Oct 2025

Choice House Halloween Party 2025

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

Liquid Sky Floyd: Dark Side of the Rainbow

Fiske Planetarium 30 Oct 2025

Astronomy on Tap Boulder @ The Rayback

Rayback Collective 27 Oct 2025

Silent Disco Dance-Hike Halloween morning!

Eben G. Fine Park 31 Oct 2025

Holiday Minis at Childish Things in Boulder

Childish Things 1 Nov 2025

Halloween with B-Love Experience

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

Halloween Laser Magic & Mysterious Moons

Fiske Planetarium 25 Oct 2025

RIP The Beat

Boulder High School 8 Nov 2025

Ringu Tulku Rinpoche: Yeshe Tsogyal Guru Yoga + Weekend Victory Over the Maras

Boulder, Colorado 30 Oct 2025

Halloween Laser Magic & Mysterious Moons

Fiske Planetarium 26 Oct 2025

Boulder Creek Walking Tour

The Boulder Dushanbe Teahouse 26 Oct 2025

Band of Toughs Presents: Five 5th - Ghostbusters, a Haunted Stage Party!

Junkyard Social Club 27 Oct 2025

Trick or Read 2025 at Time Warp!

Time Warp Comics & Games 25 Oct 2025