Halloween Parade with the Left Hand Artist Group L-HAGs!

Halloween Party at the Moose!

Fri, 30 Oct at 07:30 pm Longmont Moose Lodge #1548, 1211

UC Halloween

Sat, 31 Oct at 07:00 am The Church of Jesus Christ of Latter-day Saints

Spooks N Scares Gymkhana Hosted by Johnstown Saddle Club

Sat, 31 Oct at 08:00 am Boulder County Fairgrounds

Halloween Madness

Sat, 31 Oct at 08:00 am Garden Acres Park

Hiss-terical Haunting Cat Show 2026

Sat, 31 Oct at 09:00 am Boulder County Fairgrounds

Hiss-terical Haunting Cat Show 2026

Sat, 31 Oct at 09:00 am Boulder County Fairgrounds

Farmfest Saturday October 31, 10-2pm

Sat, 31 Oct at 10:00 am 11150 Prospect Rd, Longmont, CO, United States, Colorado 80504

Longmont Halloween Parade & Trick or Treat Street 2026

Sat, 31 Oct at 10:00 am Roosevelt Park (line-up) & Main Street

Black Kraken Boo Bash!

Sat, 31 Oct at 11:00 am Black Kraken Tattoo Studio

Howl-o-ween Trick or Treat at LSAH

Sat, 31 Oct at 11:00 am 104 S Main St, Longmont, CO, United States, Colorado 80501

Free Fall Festival - Abundant Life Church

Sat, 31 Oct at 12:00 pm 3561 Stagecoach Rd. N, Longmont, CO, United States, Colorado 80504

Spooky Village at Village at the Peaks 1-3 PM

Sat, 31 Oct at 01:00 pm Village at the Peaks

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