The west side of the metro does most of its Halloween on Saturday, Oct. 24, a week before the holiday, with a free city trunk-or-treat in Wheat Ridge, a 5K and kids’ hunt in Arvada, free trick-or-treating at Belmar and a haunted trail at Bear Creek Lake Park all on the same day. This page lists every Halloween event in Wheat Ridge, Arvada and Lakewood that we have verified against its organizer, in date order, with the time and the cost on each line. Every item links to our full listing, which has the address and the official source. We add new events here as we verify them.
Wheat Ridge
- Trunk-or-Treat at The Green at 38th: Saturday, Oct. 24, 4 to 6 p.m., 7101 W. 38th Ave., hosted by Wheat Ridge Parks and Recreation; free, kids vote for the best trunk
- Wild, Wacky Webs at Wheat Ridge Library: Wednesday, Oct. 28, 5 to 6 p.m., salt watercolor and glitter spider webs for school-age kids; free, registration required
- Dream Creatures of Oaxaca at Wheat Ridge Library: Thursday, Oct. 29, 5 to 6 p.m., make alebrijes with artist Damaris Santos in English and Spanish; free, registration required
Arvada
- Trick or Trot 5K and Kids’ Halloween Hunt: Saturday, Oct. 24, from 9 a.m. near the Apex Center; 5K $45 ($35 ages 12 and under) through Oct. 23, kids’ 1-mile hunt $10, virtual 5K $15
- Trunk or Treat at Peace Lutheran Church: Saturday, Oct. 24, 5 to 7 p.m.; cost not listed
Lakewood
- BOOMar Halloween at Belmar: Saturday, Oct. 24, from noon on The Plaza at Belmar; free trick-or-treating, RSVP requested
- Haunted Trail Adventure at Bear Creek Lake Park: Saturday, Oct. 24, 4 to 7 p.m., trails, tales, games and a campfire; registration required, cost not listed on the park page
- Trunk or Treat at Our Lady of Fatima Parish: Friday, Oct. 30, 6 p.m., in the parish parking lot; admission not listed, food $1 per item
Nearby
- Crawl-O-Ween at Butterfly Pavilion in Westminster: trick-or-treating on Oct. 24, 25 and 31, 9 a.m. to 5 p.m.; included with general admission, timed entry
- Golden’s Harvest Haunt at the Colorado Railroad Museum has already run for 2026. For the city events to the east, see Halloween events and trunk-or-treats in Denver.
Several church and park listings above do not print a cost, so check the linked page or call ahead, and bring a flashlight for the two evening trunk-or-treats. Our weekend guide for Oct. 23 to 25 has the rest of the west metro calendar.
More like this: Wheat Ridge · Arvada · Lakewood · Kids + Family · Seasonal Events · Free things to do
