2Oct

Haunted Hunt on Mainstreet

Realty ONE Group Elevations

2 Oct 2026

USD 5

30Oct

Dads of Parker Trunk or Treat

lowes

30 Oct 2026

31Oct

Phoenix Live at Studio@Mainstreet HALLOWEEN MONSTER MASH

The Studio at Mainstreet

31 Oct 2026

30Oct

Fall Fest

Prairie Crossing Elementary School

30 Oct 2026

30Oct

🎃👻 CLUB NIGHT: COSTUMES & COCKTAILS! 🍸💃

11020 S Pikes Peak Dr #50, Parker, CO

30 Oct 2026

31Oct

Trick or Treat Yourself to a FREE Engraved Keychain!

19850 Cockriel Dr, Parker, CO, United States, Colorado 80134

31 Oct 2026

28Oct

Castlewood Canyon Ward Fall Festival

The Church of Jesus Christ of Latter-day Saints

28 Oct 2026

FREE

1Nov

Pumpkins for the Farm Animals

Sher Farms

1 Nov 2026

FREE

27Oct

Ward Halloween Party

The Church of Jesus Christ of Latter-day Saints

27 Oct 2026

FREE

30Oct

Halloween Trunk or Treat Party!

18139 E Mainstreet, Parker, CO, United States, Colorado 80134

30 Oct 2026

31Oct

Halloween RPM & Roast

American Academy PTO-Motsenbocker

31 Oct 2026

30Oct

Stonegate Halloween Party

The Church of Jesus Christ of Latter-day Saints

30 Oct 2026

FREE

30Oct

Halloween Party!

13097 S Parker Rd, Unit D, Parker, CO, United States, Colorado 80134

30 Oct 2026

27Oct

Trunk or Treat

Parker, Colorado

27 Oct 2026

27Oct

Newlin Meadows Fall Festival

The Church of Jesus Christ of Latter-day Saints

27 Oct 2026

FREE

30Oct

COLORADO: All Treats, No Tricks: Sensory Friendly Halloween

Douglas County Libraries (20105 East Mainstreet, Parker, CO)

30 Oct 2026