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5 trunk-or-treats near Denver / Boulder with 2026 dates confirmed on their official sites, across 5 towns. The earliest to open is Thornton Trunk or Treat, on October 17. 3 list free admission.
Free county trunk-or-treat for kids 12 and under: a sheriff's haunted hallway, emergency vehicles in the lot, a coroner's-office spooky hallway and candy from costumed staff.
Ninth annual charity trunk-or-treat for Special Olympics Colorado's Young Athletes program, with music, carnival games, candy and prize baskets.
City trunk-or-treat with creatively decorated trunks, a Garden of the Ghouls for bigger thrills, a Boo Bayou photo area for little ones, and food trucks.
Up to 60 downtown businesses hand out treats from decorated trunks behind Parker Station, with a sensory-friendly first hour.
Free city trunk-or-treat in the new Green at 38th park: kids go car to car for treats and games and vote for their favorite decorated trunk.
Boulder County Trunk or Treat, Special Olympics Colorado Fall Fest Trunk or Treat, Thornton Trunk or Treat, Trunk or Treat on Mainstreet and Wheat Ridge Trunk-Or-Treat. Each has its 2026 dates, hours and prices on its own page.
The earliest in this guide is Thornton Trunk or Treat on October 17, 2026.
Yes: Boulder County Trunk or Treat, Trunk or Treat on Mainstreet and Wheat Ridge Trunk-Or-Treat list free admission on the official site.
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