Open Space and Mountain Parks
Boulder's Open Space & Mountain Parks are a very special place. The 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.
- Work affecting Flatirons Vista South Trail: Work on the Flatirons Vista Reservoir could lead to temporary closure of the Flatirons Vista South Trail, learn more about this project.
- Several trails are closed for longer-term projects: Please see the temporary closures page for details on the following closures:
- Sanitas Valley Trail closed
- Boulder Falls Trail closed
- Gregory Canyon Access Road closed
- Anemone Hill closed - a portion of the trail is temporarily open for out and back use only
- Flagstaff Summit Road closed to vehicles for winter season
Featured Projects & Pages
Junior Ranger Program – Challenge, Service, Discovery since 1965. Apply now!
OSMP has begun work on the North Trail Study Area (TSA) Plan. Learn more about the plan and how you can participate in the process.
To let your dogs walk off-leash on Boulder open space trails in 2015, you must first take an education class.
Read OSMP's 2014 annual report to learn what the department accomplished last year and what's next for the department.
Check out some of the winning entries in OSMP's 2014 Amateur Photography Contest!
OSMP is working with NIST to designate a trail system for visitor access and use in the NIST Protected Area.
Starting on Aug. 25, OSMP will kick-off a long-term project to improve the sustainability of trails in the Chautauqua Meadow.