Castle Rock Beer Fest Under the Stars: Sept 12 at Miller Park
By Connor Tien, DougCo Social
One of Castle Rock's best fall drinking events is back. Castle Rock Beer Fest Under the Stars — billed as "Colorado's all-inclusive beer festival" and hosted by 105 West Brewing — returns to the Philip S. Miller Park Amphitheater on Saturday, September 12, 2026, from 4 to 9pm. Per the event page on Humanitix and the official festival site, it's an all-you-can-taste evening — and it sells out.
The details
- What: Castle Rock Beer Fest Under the Stars — an all-inclusive beer festival hosted by 105 West Brewing
- When: Saturday, September 12, 2026, 4–9pm (entry from 3:30, beer and food at 4, music around 4:30, last call 8:45)
- Where: Philip S. Miller Park Amphitheater, 1375 W Plum Creek Parkway, Castle Rock, CO 80109
- Ages: 21+ (under 21 require a Non-Drinker ticket)
- Tickets: Drinker $90 (8oz souvenir mug + unlimited tastings) · Non-Drinker $60
"Leave your wallet at home"
The whole pitch is that one ticket covers everything. As the organizers put it: "By all-inclusive, we mean everything." That's 25+ Colorado breweries plus a handful of distilleries, meaderies, and wineries, and 7+ food trucks turning out unlimited appetizer-size portions of their signature dishes — you taste as much as you want. Then you grab a beer, settle into the amphitheater, and take in live music from local and national bands.
Who's pouring
The lineup runs 25+ breweries and is announced and updated on the official site as the date nears. Confirmed local participants from right here in Douglas County:
- 105 West Brewing (Castle Rock — the host)
- Wild Blue Yonder Brewing Co. (Castle Rock)
- Honnibrook Craft Meadery (Castle Rock)
- Los Dos Potrillos (Castle Rock)
- Alidade Brewing (Castle Rock)
- Lone Tree Brewing (Lone Tree)
- Purgatory Cellars Winery (Parker)
- Rockyard Brewing (Castle Rock)
Beyond the county, past and announced pours have included traveling Colorado names like Two22 Brew, James Distilling, Red Leg Brewing, Phantom Canyon, and Gunslinger — check the official site for the current, complete brewery, food-truck, and band lists. (For year-round taprooms, see our guide to the best craft breweries in Douglas County.)
How to get tickets before it sells out
This one goes every year, and there are no door sales. Tickets are sold online through Humanitix and in person at 105 West Brewing until it sells out or September 6, whichever comes first. Cup and wristband early pickup is at 105 West on Thursday 9/11 and Friday 9/12, 4–6pm. Official resale is through Tixel only — skip anything else to avoid scams. A portion of proceeds benefits charity.
- Tickets: Humanitix →
- Official site: castlerockbeerfest (Wix) →
- Our listing: Castle Rock Beer Fest Under the Stars on our events calendar
Part of a big food-and-drink stretch
The Beer Fest lands in the middle of the county's busiest run of food-and-drink events. It's one stop on our full guide to food and drink festivals across Douglas County — which also covers the two marquee tastings a few weeks earlier: the 24th annual Taste of Douglas County (Aug 20, Castle Rock) and Yelp's inaugural Taste of Parker (Sept 15, Parker).
Love a great food night out? So do we.
We don't just cover the county's food scene — we host our own dinners. If a night of good food and good company is your thing, pull up a chair:
- Dinner Club — rotating small-group dinners at standout local restaurants in Castle Rock, Parker, and Lone Tree
- Couples Dinner — a night out for couples looking to meet other couples
- KB Sunset Supper Club — our farm-to-table dinner series on the ranch in Castle Rock
Castle Rock Beer Fest Under the Stars
Philip S. Miller Park Amphitheater · 1375 W Plum Creek Parkway, Castle Rock, CO 80109
Saturday, September 12, 2026 · 4–9pm · 21+ · $90 Drinker / $60 Non-Drinker
Tickets on Humanitix · Hosted by 105 West Brewing
Reported by DougCo Social on August 3, 2026, from the official Castle Rock Beer Fest site and Humanitix. It sells out and details can change — confirm on the official site before buying.
Frequently Asked Questions
When and where is the Castle Rock Beer Fest?
Castle Rock Beer Fest Under the Stars is Saturday, September 12, 2026, from 4 to 9pm at the Philip S. Miller Park Amphitheater, 1375 W Plum Creek Parkway, Castle Rock, CO 80109. Entry opens at 3:30pm, beer and food start at 4, music around 4:30, and last call is 8:45.
How much are Castle Rock Beer Fest tickets?
Per the official site, tickets are $90 for a Drinker ticket (includes an 8oz souvenir mug plus unlimited tastings) and $60 for a Non-Drinker ticket. It's a 21+ event; anyone under 21 needs a Non-Drinker ticket. The festival sells out and there are no door sales.
What does 'all-inclusive' mean at the Castle Rock Beer Fest?
Leave your wallet at home — one ticket covers everything. That's 25+ Colorado breweries plus a few distilleries, meaderies, and wineries, and 7+ food trucks serving unlimited appetizer-size tastings of their signature dishes, all included, along with live music.
Which breweries pour at the Castle Rock Beer Fest?
The lineup runs 25+ breweries and is hosted by 105 West Brewing. Confirmed Douglas County participants include 105 West Brewing, Wild Blue Yonder, Honnibrook Craft Meadery, Los Dos Potrillos, Alidade Brewing, Lone Tree Brewing, Purgatory Cellars Winery, and Rockyard Brewing, with more Colorado breweries, distilleries, and food trucks announced closer to the event on the official site.
How do I get Castle Rock Beer Fest tickets before it sells out?
Tickets are sold online through Humanitix and in person at 105 West Brewing until it sells out or September 6, whichever comes first. There are no door sales. Cup and wristband early pickup is at 105 West on Thursday 9/11 and Friday 9/12, 4–6pm. Official resale is handled through Tixel only.