City of Boulder

Welcome to the Open Space Mountain Parks Department!

Upcoming Activities Calendar

Sign Up	Wake Up the Bear Concert with Jeff and Paige! Sunday, April 18, 2021 \| 04:00 PM \| Virtual location (from home) A virtual kids' concert in conjunction with Boulder CO's annual Tulip, Elf and Fairy Festival. Join us as we welcome the bears out of hibernation and into spring. Expect: original science-focused children's music, costumes, animation, multiple... more
Register	CANCELED: Ranger Paula's Wild Wetland Adventure and Planting Project Monday, April 19, 2021 \| 01:30 PM \| Registration Required Celebrate Earth Day by joining Ranger Paula’s Wild Wetland Adventure and Planting Project. Sombrero Marsh is the largest naturally occurring open water body in Boulder Valley! For Earth Day, join OSMP to discover this invaluable marsh and particip... more
Sign Up	(Self-guided) April meteor showers bring May... Thursday, April 22, 2021 \| 04:00 AM This year’s Lyrid Meteor Shower will peak in the pre-dawn hours of April 22nd, and although the moon will interfere with viewing this year, you can still admire the early morning sky sprinkled with stars you would observe on a summer night. In fac... more
Waitlist	Aventuras de la Guardaparques Paula: Proyecto de siembra de plantas en los humedales Saturday, April 24, 2021 \| 10:00 AM \| Registration Required Celebren el Día de la Tierra uniéndose al proyecto de siembra de plantas de humedales de la Guardaparques Paula. ¡El “Sombrero Marsh” es el humedal más grande de todo el Valle de Boulder! Los invitamos a descubrir este maravilloso lugar y a partic... more
Register	Ranger Paula's Wild Wetland Adventure and Planting Project Saturday, April 24, 2021 \| 10:00 AM \| Registration Required Celebrate Earth Day by joining Ranger Paula’s Wild Wetland Adventure and Planting Project. Sombrero Marsh is the largest naturally occurring open water body in Boulder Valley! For Earth Day, join OSMP to discover this invaluable marsh and particip... more
Sign Up	Outdoors for All Reading and Discussion Series: "Red Alert!" by Daniel R. Wildcat Monday, April 26, 2021 \| 06:00 PM \| Virtual location (from home) Join Education & Outreach Coordinator, Casey Bries, in reviewing Red Alert!: Saving the Planet with Indigenous Knowledge in which Daniel R. Wildcat examines the use of Indigenous knowledge to inspire solutions to combating climate change. This mon... more
Register	Flagstaff Litter Clean up Saturday, May 1, 2021 \| 09:00 AM \| Other OSMP Location \| Registration Required As you know, we are incorporating CDC/WHO guidelines along with the state of Colorado standards for precaution against the spread of COVID-19. City volunteers will follow the same guidelines as staff regarding facial coverings. See the Citywide Gu... more
Register	National Trails Day 2021 Saturday, June 5, 2021 \| 08:00 AM \| Registration Required Join the City of Boulder Open Space & Mountain Parks to celebrate National Trails Day 2021! After a long, hard year we invite you to get outside with your fellow community members and help construct a new sustainable reroute of the Tenderfoot Trai... more