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Open Space and Mountain Parks

Open Space and Mountain Parks

Boulder's Open Space and 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 residents with passive recreation opportunities. Trails are used by walkers, hikers, bicyclists, horseback riders, dog walkers and other passive recreational uses.

OSMP Alerts

Trail/Trailhead Closures

Please see the temporary closures page for more details on the trail closures below. OSMP's interactive trail map also shows these longer-term trail closures and restrictions: 

  • Muddy trail closures: Please check the trail map or temporary closures page for any muddy trail closures.
  • Gregory Canyon Trailhead closed Apr. 29: The trailhead will be closed on Apr. 29 for maintenance.
  • NCAR-Skunk Canyon and NCAR/Table Mesa-Bear Trails: Xcel is completing work in the area and these trails may see intermittent closures.

Project Updates & Other Alerts

Prairie dog management updates: The City of Boulder’s Open Space Board of Trustees (OSBT) approved four motions as recommendations pdf to the Boulder City Council regarding prairie dog management at their Wednesday, April 10 meeting. One motion supported the staff recommendation for how to implement the advisory working group proposals and three of their own prairie dog management recommendations. Watch a video of the public hearing and view the memo pdf staff prepared for the public hearing.

City staff are planning to present the Open Space Board of Trustees’ motions and their suggestions for implementing the advisory working groups' recommendations to City Council on Tuesday, May 7 (tentative). The staff presentation to the Boulder City Council also will include input from the city’s Parks and Recreation Advisory Board and the Environmental Advisory Board. Learn more about prairie dog management tours that OSMP hosted to provide information on OSMP prairie dog management efforts and its relationship to ecosystems and agriculture management.

Tall Oatgrass Management Program: Learn about why it's so important to aggressively manage tall oatgrass in Boulder County and what OSMP is doing about it:

OSMP administrative offices have moved: The offices relocated to 2520 55th St. in Boulder.

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

Open Space and Mountain Parks Calendar

Free, public Nature Hikes and Programs can be found at NatureHikes.org.

OSMP Master Plan Process Committee

@ 12 to 1:30 p.m.

The OSMP Master Plan Process Committee aims to engage decision-makers in developing, supporting and ensuring best practices for OSMP's Master Plan.

OSMP Master Plan Process Committee

@ 12 to 1:30 p.m.

The OSMP Master Plan Process Committee aims to engage decision-makers in developing, supporting and ensuring best practices for OSMP's Master Plan.

OSMP Master Plan Process Committee

@ 12 to 1:30 p.m.

The OSMP Master Plan Process Committee aims to engage decision-makers in developing, supporting and ensuring best practices for OSMP's Master Plan.

OSMP Master Plan Process Committee

@ 12 to 1:30 p.m.

The OSMP Master Plan Process Committee aims to engage decision-makers in developing, supporting and ensuring best practices for OSMP's Master Plan.

OSMP Master Plan Process Committee

@ 12 to 1:30 p.m.

The OSMP Master Plan Process Committee aims to engage decision-makers in developing, supporting and ensuring best practices for OSMP's Master Plan.

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Featured Projects & Pages

Osprey with a fish it caught

Live Boulder Osprey Cam

View Boulder's live osprey camera. Get a glimpse into the lives of a pair of osprey nesting. Watch them begin nesting, feeding and raising their young.

Dog on a trail wearing Voice and Sight Tag

Voice and Sight Tags

Information on how to register for the Voice and Sight Tag Program or renew your dogs' Voice and Sight Tags for 2019.

Couple hiking on a trail

OSMP Regional Trails

OSMP is committed to working with other city departments, Boulder County and other partner agencies to advance regional trail connections.

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Interactive Trail Map