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find Halloween events for every vibe.

Holiday events in Boulder, CO

Search for something you love or check out popular events in your area.

Sales end soon
Monster Bash + Mystikal Makers Market
Saturday at 12:00 PM
Wolhurst · Aspen Grove Shopping Center
Sales end soon
Monster Bash + Mystikal Makers Market
Saturday at 12:00 PM
Wolhurst · Aspen Grove Shopping Center
Just added!
Community Trunk & Treat -Hallelujah Night
Sun, Oct 26, 2:00 PM
Aurora · Moorhead Memorial Park
Just added!
Community Trunk & Treat -Hallelujah Night
Sun, Oct 26, 2:00 PM
Aurora · Moorhead Memorial Park
The Owl Academy’s Fall Fest 2025
Friday at 4:00 PM
Columbine Hills · The Owl Academy
The Owl Academy’s Fall Fest 2025
Friday at 4:00 PM
Columbine Hills · The Owl Academy
Sales end soon
Trunk or Treat
Saturday at 12:00 PM
Hampden South · Olinger Hampden Mortuary, Cremation & Cemetery
Sales end soon
Trunk or Treat
Saturday at 12:00 PM
Hampden South · Olinger Hampden Mortuary, Cremation & Cemetery
Main Event Windsor Trunk-or-Treat Event!
Thu, Oct 30, 4:00 PM
Windsor · Main Event Windsor
Main Event Windsor Trunk-or-Treat Event!
Thu, Oct 30, 4:00 PM
Windsor · Main Event Windsor
Just added!
Spooky Reader/Writer Halloween Event
Wed, Oct 29, 5:30 PM
Southglenn · Southglenn Library (Arapahoe Libraries)
Just added!
Spooky Reader/Writer Halloween Event
Wed, Oct 29, 5:30 PM
Southglenn · Southglenn Library (Arapahoe Libraries)
Just added!
Sugar Plum Holiday Bazaar
Sat, Nov 22, 10:00 AM
Wolhurst · Aspen Grove
Just added!
Sugar Plum Holiday Bazaar
Sat, Nov 22, 10:00 AM
Wolhurst · Aspen Grove
Catira's Spooky Social
Sat, Oct 25, 7:00 PM
Greenwood Village · Catira | Venezuelan Kitchen & Cocktails
Catira's Spooky Social
Sat, Oct 25, 7:00 PM
Greenwood Village · Catira | Venezuelan Kitchen & Cocktails
Just added!
Neuro-Inclusive Haunted Mansion Meetup
Fri, Oct 24, 6:00 PM
Littleton · Reinke Brothers
Just added!
Neuro-Inclusive Haunted Mansion Meetup
Fri, Oct 24, 6:00 PM
Littleton · Reinke Brothers
Fall Festival
Fri, Oct 31, 5:00 PM
Aurora District · 1800 South Tower Road, Aurora, CO, USA
Fall Festival
Fri, Oct 31, 5:00 PM
Aurora District · 1800 South Tower Road, Aurora, CO, USA
Just added!
Denver BAZAAR: Ski Chalet Holiday BAZAAR at Belleview Station
Sat, Nov 29, 11:00 AM
Southmoor Park · 6791 E Chenango Ave
Just added!
Denver BAZAAR: Ski Chalet Holiday BAZAAR at Belleview Station
Sat, Nov 29, 11:00 AM
Southmoor Park · 6791 E Chenango Ave
2025 Aurora Community Trunk or Treat
Sat, Oct 25, 12:00 PM
Aurora District · 15162 E Hampden Ave
2025 Aurora Community Trunk or Treat
Sat, Oct 25, 12:00 PM
Aurora District · 15162 E Hampden Ave
Nearly full
Trick-or-Treat AND Trunk-or-Treat HALLOWEEN EXTRAVAGANZA
Sat, Oct 25, 3:00 PM
Highlands Ranch · Grace Presbyterian Church
Nearly full
Trick-or-Treat AND Trunk-or-Treat HALLOWEEN EXTRAVAGANZA
Sat, Oct 25, 3:00 PM
Highlands Ranch · Grace Presbyterian Church
Selling quickly
Greenwood Village Fall Fest - Presented By Venture X
Thu, Oct 23, 4:00 PM
Castlewood · 6400 S Fiddlers Green Cir ste 250
Selling quickly
Greenwood Village Fall Fest - Presented By Venture X
Thu, Oct 23, 4:00 PM
Castlewood · 6400 S Fiddlers Green Cir ste 250
Sales end soon
Sensory Friendly Halloween
Saturday at 1:00 PM
Castlewood · ACES ABA - Autism Therapy Center
Sales end soon
Sensory Friendly Halloween
Saturday at 1:00 PM
Castlewood · ACES ABA - Autism Therapy Center
Sales end soon
Harvest Fall Festival
Saturday at 12:00 PM
Colorado · High Line House at Solstice
Sales end soon
Harvest Fall Festival
Saturday at 12:00 PM
Colorado · High Line House at Solstice
Selling quickly
Trunk-or-Treat with ViewHouse & My Neighbor Felix
Thu, Oct 30, 5:00 PM
Castlewood · My Neighbor Felix Centennial
Selling quickly
Trunk-or-Treat with ViewHouse & My Neighbor Felix
Thu, Oct 30, 5:00 PM
Castlewood · My Neighbor Felix Centennial
Voodoo-House Halloween Party - $7,500 IN COSTUME CONTEST PRIZES!
Fri, Oct 31, 8:00 PM
Castlewood · ViewHouse Centennial
Voodoo-House Halloween Party - $7,500 IN COSTUME CONTEST PRIZES!
Fri, Oct 31, 8:00 PM
Castlewood · ViewHouse Centennial
Highlands Ranch Hometown Holiday
Sat, Dec 6, 3:00 PM
Highlands Ranch · Highlands Ranch Town Center
Highlands Ranch Hometown Holiday
Sat, Dec 6, 3:00 PM
Highlands Ranch · Highlands Ranch Town Center
Nearly full
Merryhill of Lone Tree Trunk or Treat
Sat, Oct 25, 10:00 AM
Carriage Club · 8502 Park Meadows Dr
Nearly full
Merryhill of Lone Tree Trunk or Treat
Sat, Oct 25, 10:00 AM
Carriage Club · 8502 Park Meadows Dr

Trends in Boulder

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Frequently asked questions about Boulder

What are the best events to attend?

According to Eventbrite, the best events are:

Community Trunk & Treat -Hallelujah Night

Main Event Windsor Trunk-or-Treat Event!

Spooky Reader/Writer Halloween Event

Sugar Plum Holiday Bazaar

Which events are currently trending in Boulder?

The trending searches this month in Boulder are:

halloween event

stand up comedy

halloween parties

speed dating events

Which events are coming up?

Discover the best events happening soon – you don't want to miss them:

The Owl Academy’s Fall Fest 2025

Monster Bash + Mystikal Makers Market

Harvest Fall Festival