Open Space And Mountain Parks

Address
P.O. Box 791
Boulder, CO 80306
303-441-3440

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Open Space & Mtn Parks

Open Space and Mountain Parks

Featured Projects and Pages

Get free native plants at the Purge Your Spurge event 4.14 MB & learn about gardening with native plants!
Learn about West Trail Study Area Implementation efforts
Flagstaff Fire burn area photo gallery
Voice & Sight Tag Program Evaluation and proposed changes
View videos, maps, descriptions & trail rankings on the Accessible Trails page
Learn about what's going on in the wild in the May Nature Almanac

Trail Maps & Descriptions

System-wide trail map

Interactive map of the entire OSMP system

Trail descriptions

Maps of each trailhead area

Trail Conditions

Current trail conditions for OSMP trails

OSMP Alerts

Trail & Area Closures - view all closures

- Greenbelt Plateau & Marshall Mesa Trailheads will be closed on 5/19
- 5/1 - Grassland Bird closures start
- 4/26 - Boulder Falls Trail to remain closed past scheduled May 1 opening
- 4/12 - Sanitas Valley Trail leash-required
- View Flagstaff Fire closure info

News

- New User Rules for Chapman Drive Trail

- OSMP needs empty newspaper bags for dog stations, if you can spare some please drop off at Cherryvale Building or Cottage.