Thornton Halloween & Things to Do 2025

Your complete guide to the best halloween in Thornton and surrounding areas

How we verify →
Family-Friendly Fall Activities (47 events) → Haunted Experiences (16 events) → Halloween Food, Drink, and Parties (15 events) → Halloween Movies, Theater, and Entertainment (5 events) → Halloween Activities (17 events) →

Thornton's Halloween 2025 springs to life around Thornton City Center with ghostly attractions and frightening festivities. Enjoy horror experiences, pumpkin festivals, and costume celebrations that bring the community together for October fun.

Find the best Thornton Halloween happenings this year!

Thornton Halloween - spooky scene with haunted house, jack-o-lanterns, ghosts, witches, and trick-or-treaters

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Family-Friendly Fall Activities

47 events
Broadway Halloween Parade • Oct 25

Over 70 floats handing out free candy

Thornton Family-Friendly Fall Activities →

Haunted Experiences

16 events
Glow at the Gardens • Oct 21 – Oct 26

Over 7,500 real, hand-carved pumpkins in illuminated displays.

Thornton Haunted Experiences →

Halloween Food, Drink, and Parties

15 events
Coloween 2025 • Oct 31

World's largest indoor inflatable park transformed into a haunted funhouse.

Thornton Halloween Food, Drink, and Parties →

Halloween Movies, Theater, and Entertainment

5 events
This is Halloween: 2025 Fall Masterworks Concert • Oct 11 – Oct 12

Spooky classical music and film scores with audience costume contest.

Thornton Halloween Movies, Theater, and Entertainment →

Halloween Activities

17 events
Dark Side of Denver Ghost Tours

Explore Denver's haunted buildings and hidden tunnels

Thornton Halloween Activities →

Editor's Picks (6)

  1. Broadway Halloween Parade (Denver)
    Over 70 floats handing out free candy
  2. Glow at the Gardens (Denver)
    Over 7,500 real, hand-carved pumpkins in illuminated displays.
  3. Coloween 2025 (Lafayette)
    World's largest indoor inflatable park transformed into a haunted funhouse.
  4. Dark Side of Denver Ghost Tours (Denver)
    Explore Denver's haunted buildings and hidden tunnels
  5. Elitch Gardens Fright Fest (Denver)
    Colorado's largest Halloween event with dual day/night experiences.
  6. BOOnion Station Trick-or-Treat Parade (Denver)
    Annual trick-or-treat parade at historic Union Station.

Thornton Halloween Events Map

See every Halloween event, haunted attraction, and pumpkin patch on one map.

View Thornton Halloween Events Map →
Thornton Halloween events map

Also Near Thornton

Northglenn (2 mi) → Westminster (4.1 mi) → Commerce City (4.6 mi) → Broomfield (7.1 mi) → Arvada (7.6 mi) → Denver (9 mi) →

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