Mile High 4/20 Festival (Denver, April 20)
The largest free cannabis gathering in the U.S. — Civic Center Park, music, food vendors, and a noon countdown.
Events
Colorado Festivals & Events
Cannabis rallies, mountain music festivals, beer celebrations, and the seasonal traditions that define a Colorado year.
Colorado has a festival for every season — from the Denver 4/20 Rally in spring to the Great American Beer Festival in fall, plus a packed mountain-town concert calendar from June through September. This is the short list to plan a trip around.
Annual cannabis events
Hempfest Colorado Springs
Smaller community-focused gathering with educational programming.
Cannabis Cup events
High Times-style competitions occasionally rotate through Denver and Pueblo.
Music festivals
Red Rocks concert season
Late April through mid-November — the most iconic outdoor venue in America.
Telluride Bluegrass Festival (June)
Box-canyon setting, four days of music, one of the most beloved festivals in the country.
Aspen Music Festival (June–August)
Eight weeks of classical music in Aspen.
Underground Music Showcase (Denver, July)
Multi-venue indie festival along South Broadway.
Crested Butte Music Festival
Summer chamber music in the Rockies.
Outdoor festivals
Bolder Boulder 10K (May)
One of the largest 10Ks in the world — Memorial Day in Boulder.
Frozen Dead Guy Days (Estes Park)
Quirky March festival celebrating a famously frozen Norwegian resident.
Steamboat Winter Carnival (February)
Ski-joring down Lincoln Avenue and a torchlight ski parade.
Vail Snow Daze (December)
Resort-opening week with concerts and parties.
Food & beer festivals
- Great American Beer Festival (Denver, October) — the largest U.S. beer festival.
- Denver Food + Wine Festival (September).
- Breckenridge Oktoberfest (September) — German beer, brats, and lederhosen.
- Vail Wine Classic (July).
- Aspen Food & Wine Classic (June).
Seasonal celebrations
- Denver Christkindl Market — German holiday market at Civic Center.
- Blossoms of Light — Denver Botanic Gardens winter lights display.
- Trail of Lights — Chatfield Farms holiday drive.
- Pearl Street Christmas Tree Lighting — Boulder kickoff.
- Independence Day fireworks across every mountain town.
Interactive map
Colorado's biggest festival venues
Frequently asked questions
What is the biggest cannabis event in Colorado?
The Denver 4/20 Mile High Festival at Civic Center Park — the largest free cannabis gathering in the U.S.
Is Red Rocks a year-round venue?
The concert season runs late April through mid-November. The park itself is open year-round for hiking and visiting.
When is the Great American Beer Festival?
Early October at the Colorado Convention Center in Denver — tickets sell out the day they go on sale.
