18Oct

Spooky Hunt: Pearl Street Pumpkins & Riddles Quest

Pearl Street Mall

18 Oct 2026

USD 23

31Oct

The Fright Crawl | Boulder's #1 Halloween Bar Crawl 2026 | Sat, Oct 31

TBA

31 Oct 2026

USD 8 TO 82

31Oct

The Fright Crawl | Boulder Halloween Day Bar Crawl 2026 | Sat, Oct 31

TBA

31 Oct 2026

USD 8 TO 71

31Oct

6th Annual Motown Haunted Prom - Halloween Dance Party

Roots Music Project

31 Oct 2026

USD 0 TO 222

30Oct

The Fright Crawl | Boulder Halloween Bar Crawl 2026 | Fri, Oct 30

TBA

30 Oct 2026

USD 8 TO 71

29Oct

The Fright Crawl | Boulder Halloween Bar Crawl 2026 | Thurs, Oct. 29

TBA

29 Oct 2026

USD 8 TO 71

30Oct

Deadphish Orchestra "The ghosts of PHISH Halloweens past"

Roots Music Project

30 Oct 2026

USD 0 TO 200

31Oct

CHARLIE WONDER, DJ PENGUIN, EASTLIN and Friends : Rave from the Grave

Roots Music Project

31 Oct 2026

USD 0 TO 222

20Oct

Boulder County Trunk or Treat

Boulder County Sheriff's Office

20 Oct 2026

FREE

30Oct

Dark Disko

Rosetta Hall

30 Oct 2026

FREE

25Oct

Fall Fest

Rosetta Hall

25 Oct 2026

FREE

24Oct

Spooky Cabaret 2026

3022 East Sterling Cir

24 Oct 2026

USD 34

24Oct

Zouk High SATURDAZE: Werewolves Vs Vampires 🐺🧛👻🎃

Boulder Circus Center

24 Oct 2026

14Oct

Ghosts of Boulder Bike Tour

Macky Auditorium Concert Hall

14 Oct 2026

FREE

28Oct

Five 5ths: Beetlejuice by Band of Toughs

Junkyard Social Club

28 Oct 2026

USD 13 TO 55

31Oct

Halloween Monster Book Bash (Kid Friendly)

1909 9th St

31 Oct 2026

FREE

30Oct

AoxomoxoA - Live at The St Julien

St Julien Hotel & Spa

30 Oct 2026

31Oct

Halloween Party | CBAR

921 Pearl St

31 Oct 2026

USD 35

1Nov

Boulder Murder Mystery: Solve the case!

1333 Pearl St, Boulder, CO 80302, USA

1 Nov 2026

USD 10

24Oct

Howl-O-Ween at Eldorado Canyon

9 Kneale Rd

24 Oct 2026

FREE

29Oct

Halloween Latte Art Throwdown

Boxcar Coffee | Mesa Cafe

29 Oct 2026

USD 0 TO 13

31Oct

Spooktopia: A Magic Portal Party

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

31 Oct 2026

30Oct

Samhain Ancestors' Celebration at the StarHouse

The StarHouse

30 Oct 2026

USD 50 TO 77

22Oct

Choice House Halloween Party!

6901 Lookout Rd, Boulder, CO, USA

22 Oct 2026

FREE

30Oct

PiCatsso Paint Night - Paint With Cats!!!

Purrfect Pause Cat Cafe

30 Oct 2026

USD 39

31Oct

Halloween Milonga

Boulder Tango Studio

31 Oct 2026

31Oct

INANNA'S DESCENT: A Samhain Journey Through the Underworld

The StarHouse

31 Oct 2026

USD 84 TO 120

30Oct

WITCHES R.I.S.E. HALLOWEEN POTLUCK + DANCE PARTY with Women R.I.S.E

Boulder, Colorado

30 Oct 2026

24Oct

Fright Flight

Pleasant View Fields

24 Oct 2026

31Oct

Convergence 20: The Dungeon Crawler's Ball

1543 Pearl St, Boulder, CO 80302-5408, United States

31 Oct 2026

24Oct

BOULDER BOO BASH

The Church of Jesus Christ of Latter-day Saints

24 Oct 2026

FREE

31Oct

Halloween Ride: Costumes, Coffee & Donuts

Performance & Recovery Labs/PR Labs

31 Oct 2026

FREE

27Oct

Halloween Skate Party

Avalon Ballroom

27 Oct 2026

24Oct

Boo-lder Swing Halloween Dance + Soul Night! (10/24)

6185 Arapahoe Rd, Boulder, CO

24 Oct 2026

29Jan

The Luminary Masquerade: Act II — Elevate

Rembrandt Yard

29 Jan 2027

USD 205 TO 322