The City of Boulder welcomes your feedback. Use our Inquire Boulder customer service tool to tell us what’s on your mind.

  • OSMP Trails & Recreation
  • OSMP Visitor Info
  • OSMP Get Involved
  • OSMP Nature & Restoration
  • OSMP - About
  • OSMP Kids & Families
  • OSMP Plans & Reports
  • OSMP en Español

Temporary Closures, Advisories and Fire Bans

Trail Map

Open Space and Mountain Parks (OSMP's)  interactive trail map now includes longer-term trail closures - an easy option to check before your trip!

Muddy trail closures as of Mon Jan 21, 2019.

In addition to the closed trails below, the following trailheads are closed:

  • Marshall Mesa Trailhead
  • Greenbelt Plateau Trailhead
  • Flatirons Vista Trailhead

Doudy Draw Trailhead remains open to allow vehicle parking for visitors accessing the South Mesa area, but trails leading south out of Doudy Draw Trailhead are closed.

OSMP staff will monitor trails and open them when conditions dry out.

Closed Trails

Left Hand Trail from Boulder Valley Ranch to Neva Rd
Left Hand
Marshall Mesa/Greenbelt Plateau
Coal Seam
Community Ditch
Cowdrey Draw
Greenbelt Plateau
High Plains
Marshall Mesa
Marshall Valley
Doudy Draw and Springbrook areas
Community Ditch
Doudy Draw
Goshawk Ridge
Spring Brook Loop North
Spring Brook Loop South
Flatirons Vista
Flatirons Vista North
Flatirons Vista South
Greenbelt Connector
Prairie Vista

Centennial Trailhead temporarily closed Jan. 23, 2019
The Centennial Trailhead on Sunshine Canyon Dr. by the Sanitas/Red Rocks area will be closed from 6 am to 12 pm on Wednesday, Jan. 23 for maintenance. All trails in the area will remain open. 

Gregory Canyon Trailhead temporarily closed Jan. 29, 2019
The Gregory Canyon Trailhead will be closed from 6 am to 12 pm on Tuesday, Jan. 29 for maintenance. All trails in the area will remain open. 

Trail closures related to Xcel transmission line work
The Bear Canyon Trail west of the Mesa Trail is now open! NCAR-Skunk Canyon Trail will be closed Dec. 1-Jan. 31, 2019. The NCAR-Table Mesa/Bear Trail is open, but may see periodic, daily closures. Please visit for details on the project. 

Flagstaff Summit Road closed to vehicles for winter Oct. 30, 2018
The Flagstaff Summit Road is closed to vehicles for the winter. It will reopen to vehicles May 1, 2019.

East-Boulder White Rocks Trail section closed
The bridge on the East Boulder-White Rocks Trail is closed after flooding conditions on the path caused the bridge to become disconnected from its embankment. OSMP advises visitors not to approach the bridge. The East-Boulder White Rocks Trail remains open up to the bridge closure from both directions, but no through trail travel is allowed - see the closure map

Rock Island 1 in Boulder Canyon closed
Rock Island 1 is closed. The rock fractured and part fell onto the Boulder Canyon Creek path. Sections of the remaining rock have been evaluated as unstable so it is closed until recommended bolting can be completed.   

No parking along Highway 170 near Doudy Draw and South Mesa Trailheads
Please remember that parking is not allowed on Highway 170 at any time.