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
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.
- Muddy trail closures as of Apr. 23: Trails in the Marshall Mesa, Greenbelt Plateau, Flatirons Vista, Doudy Draw and Springbrook areas, and the Left Hand Trail from Boulder Valley Ranch to Neva Rd are closed because of muddy conditions. View more information about the muddy trail closures.
- Foothills South Trail closed: from the Utica Ave. access to Four Mile Canyon Creek, more information: osmpprojects.org.
- Red Rocks Trail 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.
Project Updates & Other Alerts
Pilot Cobalt and Eagle Trail Use Designation Changes: Open Space and Mountain Parks (OSMP) is seeking input to determine whether it needs to re-designate the Eagle and Cobalt trails. Recently, visitors expressed concern about the possibility of injuries on the Eagle Trail because a short section of it is significantly steeper and more technical than all other trails in the Boulder Valley Ranch area. Learn more and share your feedback.
OSMP 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. Sign up for email updates.
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 & Mountain Parks Calendar
| S | M | T | W | T | F | S |
|---|---|---|---|---|---|---|
| 1 | 2
|
3 | 4
|
5 | 6 | 7 |
| 8 | 9
|
10 | 11
|
12 | 13 | 14 |
| 15 | 16 | 17
|
18
|
19
|
20
|
21
|
22
|
23 | 24 | 25
|
26 | 27
|
28
|
29
|
30
|
Featured Projects & Pages
Osprey Cam Live!
View OSMP’s Osprey camera. Get a glimpse into the lives of a pair of Osprey nesting on OSMP. Watch them begin nesting, feeding and raising their young.
Junior Ranger Program
Summer jobs for teens! The Junior Ranger Program engages teens on OSMP to serve, discover and grow! Apply by April 1, 2018.
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.
Open Space and Mountain Parks Master Plan
We’d like to hear from you! Help shape the future of Open Space & Mountain Parks as we kick off a process to develop a departmental Master Plan.
OSMP Ranger Naturalists
Open Space and Mountain Parks Rangers work to protect the trails and rich and diverse public landscapes here in Boulder.
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.
Interactive Trail Map