3D Printing 101: An Intro to 3D Printing
6:30 pm – 8 pm · Douglas County Libraries - Castle Rock (Philip S. Miller)
Festival
· 2 to 6 pm; ceremony 5 pm, star lit about 5:30 pm, then fireworks · Historic Wilcox Square and Festival Park
Checked October 31, 2026 against castlerock.org. Times can change; the organizer’s page is the record. Report a correction · Know something opening or closing? Tell us
The Chamber’s holiday opener, held since 1962: an afternoon downtown of carolers and dance groups, a kids’ zone with a petting zoo and face painting, food trucks and nonprofit booths, with Santa and Mrs. Claus in Festival Park from 2 to 4:15 and the firefighters’ 90th annual chili supper at Fire Station 151. Biff Gore plays the main stage at 4th and Wilcox, where the ceremony starts at 5; the star on the Rock is lit at about 5:30 and fireworks follow, weather permitting. The Chamber takes cards only; free shuttles run from 1:30 to 8 pm from AdventHealth Castle Rock, Douglas County High School and the fairgrounds, and downtown streets close from 6 am to 8 pm.
6:30 pm – 8 pm · Douglas County Libraries - Castle Rock (Philip S. Miller)
Market
9 am – 4 pm · Douglas County Fairgrounds & Events Center · Free