Time to give Mother Nature her due. Wednesday, April 22, 2026, is the annual Earth Day. Here are some family-friendly festivals, fairs, recycling events, workshops and other celebrations we’ve heard about across the Front Range. Most events are either Saturday the 18th or the 25th. If you know of any we’ve missed, send details to news@milehighonthecheap.com. All events are FREE, unless otherwise noted.
Saturday, April 18, 2026
Barr Lake Earth Day Celebration
Photo courtesy: Friends of Barr Lake
8 a.m. to 12 p.m. Start your day with a Trail Cleanup from 8 a.m. to 10 a.m. and help keep Barr Lake beautiful. Stay for fun, hands-on Earth Day activities (10 a.m. to 12 p.m.): Turn old t-shirts into reusable shopping bags, get creative at the Activity Table and meet and connect with educators from the Bird Conservancy of the Rockies.
There is a $10 entry fee to visit Barr Lake State Park, unless you already have a Keep Colorado Wild Pass linked to the vehicle registration that you will be driving (then entry is free!). Plentiful parking is available at the Nature Center for easy access to the event. Barr Lake State Park Nature Center, 13401 Picadilly Rd., Brighton.
Longmont Earth Day Celebration
10 a.m. to 2 p.m. Sustainable Resilient Longmont stages this event at the Timberline PK-8 School. Features: live performance from Jenn Cleary, reptile show from My Nature Lab, community clean-up in Centennial Park, dance performances and clothing swap (bring your old clothes, all conditions accepted).
Also upcycled arts and crafts projects, food trucks, educational booths, and alpacas!
233 E. Mountain View Ave., Longmont.
Earth Day at Denver Premium Outlets
10 a.m. to 2 p.m. Denver Premium Outlets will host a free Earth Day celebration in partnership with Butterfly Pavilion in the Play Park. Learn about pollinators from the experts at the Butterfly Pavilion. Kids can come and enjoy crafts and fun facts. If weather conditions aren’t good, the event will be moved to the Food Pavilion. 13801 Grant St., Thornton.
Walk Your Block Clean
9 a.m. to 11 a.m. Walk Your Block Clean is a grassroots neighborhood litter pickup bringing Louisville and Lafayette residents together the weekend before Earth Day to care for the streets, sidewalks, and green spaces we all share.
Walk Your Block Clean is free, accessible, and open to everyone. No experience required. No complicated logistics. Just neighbors walking their blocks and making their corner of the world a little better.
Meet at the Elks Lodge parking lot on Main Street in Downtown Louisville. There you can get supplies including bags, gloves and grabbers. Walk at your own pace through your own neighborhood. Kids and leashed dogs are very welcome. Held rain or shine.
Saturday, April 25, 2026
Earth Day Celebration
10 a.m. to 1 p.m. Adams County, in collaboration with the cities of Westminster, Northglenn, Thornton, Brighton, and Commerce City, is hosting its Earth Day Celebration this year at Westminster City Park Recreation Center.
The event will feature family-friendly activities, free food, food trucks, face painting, educational exhibits, and children’s activities.
Attendees can test drive electric vehicles and explore electric yard equipment. Locals who bring in a gas-powered piece of equipment for trade-in, will receive a $100 to $200 voucher toward electric yard equipment at participating Ace Hardware stores.) 10455 Sheridan Blvd., Westminster.
Earth Day Celebration in Englewood
9 a.m. to 12 p.m. At Centennial Park. This event takes place right after the South Platte Renew river clean-up. Enjoy music, vendors, kids crafts, a tree giveaway and more. 4630 S. Decatur St., Englewood.
Saturday, May 2, 2026
Earth Day, Every Day in Lafayette
10 a.m. to 2 p.m. Family-friendly event at Bob L. Burger Recreation Center parking lot and Outdoor Classroom) with a Sustainable Makers Market, 50+ eco-exhibitors, performers Jeff & Paige at 10:30 a.m., live wild animals, electric vehicle showcase, food trucks and more.
Parking is very limited, please walk, bike, bus, or carpool to the event. Bike valet is available. 105 W. Baseline Rd., Lafayette.
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