The Colorado calendar
Every month, something worth driving for.
254 festivals, races, harvests, and small-town traditions across the state. Swipe to a month, filter by what you care about. We link straight to each event's source — no tickets through us.
Sep 20 – 26
Week of 2026 · 8 events
Aspen Filmfest
Late September
A focused, five-day program of independent narrative and documentary films at the Wheeler Opera House. Lower-key than Telluride and easier to get into.
Boulder Fall Fest
Late September
Three blocks of Pearl Street closed for a beer garden, two music stages, and a kids' carnival. Locals come for the Avery and Boulder Beer tents.
Boulder Philharmonic Season Opener
Late September
Opening-night concert of the Boulder Philharmonic at CU's Macky Auditorium. The orchestra's resident season runs through May.
Pikes Peak Regional Air Show
Late September
Two-day air show at Colorado Springs Airport with U.S. military demo teams and warbird flights. Free general admission; flight-line tickets sell.
Stanley Marketplace Oktoberfest
Late September
Cheluna Brewing's marketplace-wide Oktoberfest with a stein-hoisting contest and German-American food from the on-site restaurants.
Denver Startup Week
Late September
Free week of talks and panels across about 30 LoDo venues with about 20,000 attendees. The opening party fills Wynkoop Plaza.
Estes Park Autumn Gold Festival
Late September
Free fall festival in Bond Park during peak aspen color. About 30 craft vendors; live music both days.
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