Oktoberfest 2026: Castle Rock, Parker, Highlands Ranch & Beyond
By Connor Tien, DougCo Social · Dates verified with the organizers September 2, 2026
Every Oktoberfest actually happening in Douglas County this fall — Castle Rock, Parker, Lone Tree, Highlands Ranch, and Sterling Ranch — checked against each organizer’s own calendar, not last year’s flyers. Mini Highland cows, dachshund races, and a stein hoist at literally every one of them.
The 2026 lineup
Oktoberfest at Lone Tree Brewing Parker
Sat, Sep 5Lone Tree Brewing Company - Parker, Parker · 12:00 PM–8:00 PM · Free
Oktoberfest at Lone Tree Brewing
Sat, Sep 12Lone Tree Brewing Company, Lone Tree · 11:00 AM–8:00 PM · Free
Oktoberfest
Sat, Sep 19Wilcox Square - Historic Downtown Castle Rock, Castle Rock · 1:00 PM–9:00 PM · Free
Oktoberfest Celebration with Mini Horses!
Sat, Sep 19Living The Dream Brewing, Highlands Ranch · 12:00 PM–10:00 PM · Free
Oktoberfest Highlands Ranch 2026
Sat, Sep 26Highlands Ranch Town Center, Highlands Ranch · 1:00 PM–9:00 PM · Free
Sterling Ranch Oktoberfest
Sat, Sep 26Providence Park, Sterling Ranch · 11:00 AM–7:00 PM · Free
HRCA Oktoberfest 5K
Sat, Sep 26Highlands Ranch Town Center, Highlands Ranch · 9:00 AM–11:00 AM · $25-$45
Schweiger Ranch, Lone Tree · 2:30 PM–6:30 PM · Free
Every date above was re-verified on the organizer’s own site on September 2, 2026. Details drift — check the linked event page before you go.
Fair warning: Saturday, September 26 is a six-way pileup
HRCA’s Oktoberfest, Sterling Ranch’s Oktoberfest, the Douglas County Fall Festival at Sandstone Ranch, Parker Fall Fest, Harvest Day at CALF’s Lowell Ranch, and the Colorado Highland Games all land on the same day — plus the HRCA Oktoberfest 5K that morning. Pick your lane early; you are not doing all six.
What happened to the Parker Oktoberfest?
If you’re searching for the big Parker Oktoberfest at O’Brien Park — the one that ran for 14 years under the Council of Arts, Science & Culture — it hasn’t come back. Its last edition was September 17–19, 2021, and it is listed as cancelled. The Town’s fall event at O’Brien Park is now Parker Fall Fest on September 26, with a beer garden but a different identity.
The nice twist: Parker’s Oktoberfest tradition didn’t die, it changed hands. Lone Tree Brewing’s Parker taproom occupies the old Barnett & Son Brewing space at 18425 Pony Express Dr — and Barnett’s ran its own Oktoberfest right there, stein hoists and all, before Lone Tree Brewing acquired the brewery in 2024. The September 5 Oktoberfest at that address is the same party under a new flag.
FAQs
When is the Castle Rock Oktoberfest in 2026?▾
Saturday, September 19, from 1 to 9pm at Wilcox Square in historic downtown Castle Rock.
When is the Highlands Ranch Oktoberfest in 2026?▾
HRCA's Oktoberfest is Saturday, September 26, 1–9pm at Highlands Ranch Town Center (9315 Dorchester St), with the Oktoberfest 5K that morning. Living The Dream Brewing also runs its own Oktoberfest celebration on Saturday, September 19.
Is there an Oktoberfest in Parker in 2026?▾
Parker's standalone Oktoberfest at O'Brien Park has not run since 2021 and is listed as cancelled. The Oktoberfest happening in Parker this year is at Lone Tree Brewing's Parker taproom on Saturday, September 5 — which occupies the old Barnett & Son Brewing space at 18425 Pony Express Dr, where Barnett's ran its own Oktoberfest. The Town's fall event at O'Brien Park is Parker Fall Fest on September 26.
Which Douglas County Oktoberfests are free?▾
The brewery Oktoberfests — Lone Tree Brewing's Parker (Sept 5) and Lone Tree (Sept 12) celebrations and Living The Dream in Highlands Ranch (Sept 19) — are free to attend; you pay for what you eat and drink. Check each event page for the community festivals' details.
What is the busiest Oktoberfest weekend in Douglas County?▾
Saturday, September 26 — HRCA Oktoberfest, Sterling Ranch Oktoberfest, Parker Fall Fest, the Douglas County Fall Festival at Sandstone Ranch, Harvest Day at CALF, and the Colorado Highland Games all land on the same day, plus the HRCA Oktoberfest 5K that morning.
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