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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

- South Boulder Creek bridge construction begins Oct. 26:  OSMP has started building a new bridge that will allow visitors on the South Boulder Creek Trail to cross South Boulder Creek. Learn more about current trail closures.

- Several trails are closed for longer-term projects: Please see the temporary closures page for details on the following closures:

  • East Boulder/White Rocks Trail bridge closed
  • Boulder Falls Trail closed
  • Anemone Hill closed - a portion of the trail is temporarily open for out and back use only

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Featured Projects & Pages

North TSA Recreation Logo

North Trail Study Area Plan

OSMP is working on the North Trail Study Area (TSA) Plan. Learn more about the plan and how you can participate in the process.

Dog on a trail with a 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 2016.

Photo of golden aster

Funded Research Program

OSMP has funding for scientific inquiry into conservation, agriculture and recreation; learn more and submit a proposal for funding.


NIST Protected Area Trails

OSMP is working with NIST to designate a trail system for visitor access and use in the NIST Protected Area.

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