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Open Space and Mountain Parks

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.

OSMP Alerts 

Open Space and Mountain Parks Master Plan

Open Space and Mountain Parks has kicked off a long-term effort to establish a community-supported plan that will guide the management of the community’s open space over the next decade and beyond. Learn more. Our first "window of engagement" for the Master Plan began on Monday, Jan. 22. Share your comments. Our first "window of engagement" will close on Friday, March 30.

Current Trail/Trailhead Closures

Please see the temporary closures page for details on the following closures. OSMP's interactive trail map also shows current trail closures.

  • Towhee and North Fork Shanahan Trails closed: Xcel work in the area has temporarily closed these trails.
  • Red Rocks and Anemone Trails closed 
  • 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. 

Other Alerts 

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

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Featured Projects & Pages

Girl sniffing a tree

Nature Hikes and Programs

Natural Selections are free, educational nature programs on topics including ecology, wildlife, local history, night hikes, children’s programs, and more.

Ranger teaching fishing program

OSMP Ranger Naturalists

Open Space and Mountain Parks Rangers work to protect the trails and rich and diverse public landscapes here in Boulder.

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 2018.

Close up of trail map showing parking fee symbol

Open Space Parking Permits and Fees

Visitors whose vehicles are registered outside of Boulder County can now purchase OSMP annual parking permits online. Learn more about parking permits.

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