Open Space and Mountain Parks
Boulder's Open Space & Mountain Parks (OSMP) are a very special place. The open space lands teem with native plants and wildlife and are home to threatened and endangered species. They serve as a buffer between Boulder and nearby development. They sustain agriculture uses and add untold benefits to the natural environment - clean air, water, and earth.
The lands shape the urban mosaic of the Boulder Valley and provide citizens with passive recreation opportunities. Trails are used by walkers, hikers, bicyclists, horseback riders, dog walkers and other passive recreational uses.
- Muddy trail closures as of May 23: Trails in the Marshall Mesa, Greenbelt Plateau, Flatirons Vista, Doudy Draw and Springbrook areas are now open. The Left Hand Trail from Boulder Valley Ranch to Neva Rd will remain closed because of muddy conditions. View more information about the muddy trail closures.
- Community Ditch Trail leash-required: Dogs must be on leash east of Highway 93 because of coyote activity.
- East Boulder/White Rocks Trail bridge closed
- Boulder Falls Trail closed: Starting as early as Monday, Feb. 12, OSMP will begin work to repair Boulder Falls.
Prescribed burning on Shanahan Ridge: The City of Boulder’s Open Space and Mountain Parks (OSMP) Department and Boulder Fire-Rescue are anticipating conducting prescribed burning on Shanahan Ridge through May 31. This prescribed burning will help create a perimeter for a larger burn that is anticipated to occur later this month or in the fall. Learn more at PlannedBurns.org.
Purchase OSMP annual parking permits online: Visitors whose vehicles are registered outside of Boulder County can now purchase OSMP annual parking permits online. Learn more about parking permits.
Featured Projects & Pages
View OSMP’s Osprey camera. Get a glimpse into the lives of a pair of Osprey nesting on OSMP. Watch them begin nesting, feeding and raising their young.
Learn about the OSMP Master Plan, what's ahead and how you can get involved.
Summer jobs for teens! The Junior Ranger Program engages teens on OSMP to serve, discover and grow! Recruitment is closed for 2018.
Information on how to register for the Voice and Sight Tag Program or renew your dogs' Voice and Sight Tags for 2018.
Visitors whose vehicles are registered outside of Boulder County can now purchase OSMP annual parking permits online. Learn more about parking permits.
Open Space and Mountain Parks Rangers work to protect the trails and rich and diverse public landscapes here in Boulder.
Interactive Trail Map