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find Halloween events for every vibe.

October events in Longmont, CO

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Feria del Tamal 2025
Today at 4:00 PM
Boulder County · Boulder County Fairgrounds Exhibit Building
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Feria del Tamal 2025
Today at 4:00 PM
Boulder County · Boulder County Fairgrounds Exhibit Building
Nearly full
Whaaat!? Festival 2025
Today at 10:00 AM
Boulder · Roser ATLAS Center
Nearly full
Whaaat!? Festival 2025
Today at 10:00 AM
Boulder · Roser ATLAS Center
Selling quickly
Joanne Lee Molinaro -- "The Korean Vegan: Homemade," with Scott Jurek
Wednesday at 6:30 PM
Boulder · First Congregational Church Of Boulder
Selling quickly
Joanne Lee Molinaro -- "The Korean Vegan: Homemade," with Scott Jurek
Wednesday at 6:30 PM
Boulder · First Congregational Church Of Boulder
Selling quickly
5th Annual Motown Haunted Prom - Halloween Dance Party
Fri, Oct 31, 8:00 PM
Boulder · Roots Music Project
Selling quickly
5th Annual Motown Haunted Prom - Halloween Dance Party
Fri, Oct 31, 8:00 PM
Boulder · Roots Music Project
Coloween 2025: Open Bar & Haunted Bounce Empire
Fri, Oct 31, 9:00 PM
Lafayette · Bounce Empire
Coloween 2025: Open Bar & Haunted Bounce Empire
Fri, Oct 31, 9:00 PM
Lafayette · Bounce Empire
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Techno of the Opera – Masquerade Party at Dickens Opera House
Today at 8:00 PM
Longmont · Dickens Opera House, Main Street, Longmont, CO, USA
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Techno of the Opera – Masquerade Party at Dickens Opera House
Today at 8:00 PM
Longmont · Dickens Opera House, Main Street, Longmont, CO, USA
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Band of Toughs Presents: Five 5th - Ghostbusters, a Haunted Stage Party!
Monday at 6:30 PM
Boulder · Junkyard Social Club
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Band of Toughs Presents: Five 5th - Ghostbusters, a Haunted Stage Party!
Monday at 6:30 PM
Boulder · Junkyard Social Club
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Program Council Presents: CONNOR WOOD Homecoming Comedy Show
Wednesday at 7:00 PM
Boulder · Glenn Miller Ballroom
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Program Council Presents: CONNOR WOOD Homecoming Comedy Show
Wednesday at 7:00 PM
Boulder · Glenn Miller Ballroom
Nearly full
Holiday Minis at Childish Things in Boulder
Today at 11:00 AM
Boulder · Childish Things
Nearly full
Holiday Minis at Childish Things in Boulder
Today at 11:00 AM
Boulder · Childish Things
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Jackson Crawford -- "The Poetic Edda"
Tuesday at 6:30 PM
Boulder · Boulder Book Store
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Jackson Crawford -- "The Poetic Edda"
Tuesday at 6:30 PM
Boulder · Boulder Book Store
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Barbelfish Balkan Band at Willow Farm
Tomorrow at 3:00 PM
Longmont · Willow Farm Contemplative Center
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Barbelfish Balkan Band at Willow Farm
Tomorrow at 3:00 PM
Longmont · Willow Farm Contemplative Center
Boulder's Best Halloween Weekend Bar Crawl
Boulder · Best Bars in Boulder
Boulder's Best Halloween Weekend Bar Crawl
Boulder · Best Bars in Boulder
Nearly full
Glenfiddich Whiskey Class
Tuesday at 6:00 PM
Lafayette · William Oliver's Lafayette
Nearly full
Glenfiddich Whiskey Class
Tuesday at 6:00 PM
Lafayette · William Oliver's Lafayette
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Lifted! An Uplift Internationale Benefit concert
Monday at 5:00 PM
Louisville · The Louisville Underground
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Lifted! An Uplift Internationale Benefit concert
Monday at 5:00 PM
Louisville · The Louisville Underground
Nearly full
Halloween Silent Disco - All Ages Family Party!
Today at 6:00 PM
Louisville · The Louisville Underground
Nearly full
Halloween Silent Disco - All Ages Family Party!
Today at 6:00 PM
Louisville · The Louisville Underground
Nearly full
Halloween at The Merc with Bourbon Brass Band
Fri, Oct 31, 5:00 PM
Jamestown · Jamestown Mercantile
Nearly full
Halloween at The Merc with Bourbon Brass Band
Fri, Oct 31, 5:00 PM
Jamestown · Jamestown Mercantile
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Commercial Brokers of Longmont October 2025 Lunch Meeting
Tuesday at 11:30 AM
Longmont · Coors Grain Co
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Commercial Brokers of Longmont October 2025 Lunch Meeting
Tuesday at 11:30 AM
Longmont · Coors Grain Co
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Death Meditation
Wednesday at 6:00 PM
Longmont · 320 Main St
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Death Meditation
Wednesday at 6:00 PM
Longmont · 320 Main St
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Night Noises - LONGMONT
Tomorrow at 2:00 PM
Longmont · First Congregational United Church of Christ of Longmont, CO, 1500 9th Avenue, Longmont, CO, USA
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Night Noises - LONGMONT
Tomorrow at 2:00 PM
Longmont · First Congregational United Church of Christ of Longmont, CO, 1500 9th Avenue, Longmont, CO, USA
13th Annual Halloween Costume Dance Party
Fri, Oct 31, 8:00 PM
Louisville · The Courtyard - Event Space
13th Annual Halloween Costume Dance Party
Fri, Oct 31, 8:00 PM
Louisville · The Courtyard - Event Space

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