Free things to do this weekend in and around Denver

Denver's Top Picks for FREE family-friendly fun Friday, September 5, 2026 to Sunday, September 7, 2026.

(Scroll down for full, detailed list of free weekend activities.)

• Art Stop at Boulder Museum of Contemporary Art - Boulder Museum of Contemporary Art - 1750 13th Street, Boulder, CO 80302, United States, Saturday, September 5, 2026, 9am - 2pm Saturdays, 3:30-7:30pm Wednesdays
• Bird Walks at Bluff Lake Nature Center - Bluff Lake Nature Center - Martin Luther King Junior Boulevard, Denver, CO, USA, Saturday, September 5, 2026, See website
• Fall Fest in Dillon - Dillon Farmers' Market - Buffalo Street, Dillon, CO, USA, Saturday, September 5, 2026, 10 am - 5 pm
• FREE fall and holiday mini photo sessions with Shoott! - Denver - Shoott - Broadway, New York, NY, USA, Saturday, September 5, 2026, See link for times
• Fourth Annual Dog-Eared Pages Book Drive - YellowDog Design, Print and Marketing - Steele Street, Denver, CO, USA, Friday, September 5, 2026, 9:00AM
• Marine Biologist for a Day - Downtown Aquarium - Water Street, Denver, CO, USA, Saturday, September 5, 2026, 9am - 2pm
• Mythical Storytime with Fantasy Friends - Audacious Immersive - 1373 N Grant St. Denver, CO 80203, Sunday, September 6, 2026, 1:00pm
• Produce in the Park - Mercado en el Parque - Collyer Park - Collyer Street, Longmont, CO, USA, Sunday, September 6, 2026, 1 pm - 2 pm
• September First Friday ArtWalk in Old Colorado City - Old Colorado City - Colorado Springs, CO, USA, Friday, September 4, 2026, 5-8 pm
• Thornton 70th Anniversary History Exhibit - Thornton Arts & Culture Center - Dorothy Boulevard, Thornton, CO, USA, Friday, September 5, 2026, 10 am - 5 pm