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Shanahan Ridge Access Point

Shanahan Ridge Access Point

OSMP Alerts

Winter conditions 

Winter conditions exist across open space! 

  • Trails may be icy & slick. 
  • Wear appropriate gear, such as traction devices for your shoes/boots.
  • Do not walk on ice-covered lakes and ponds.


People enjoy open space for physical, emotional and mental health. Remember to always be courteous. Don't forget: 

  • Only recreate with household members.
  • Wear a face covering when passing others. 
  • Stay on trail/walk through mud. Avoid stepping on vegetation. 
  • Visit to see current trail closures, historical data that shows areas of high and low open space use and trails that are wider than 6 feet. See when trails are busiest through our Visitation Data Explorer.
  • Protect first responders. Know your limits and don’t take unnecessary risks.


Trail entry point starting where Lehigh and Lafayette streets intersect (Google Map search 1903 Lehigh Street Boulder) with parking along the street.
A second entry point is at the southwest end of Hardscrabble Lane off Lehigh Street.

Please check for Trail & Area Closures.

Or view the interactive trail map (includes trail closures) and the interactive wildlife closures map

You are responsible for knowing and complying with all closures and OSMP rules & regulations.


There is no sanctioned OSMP parking lot for the Shanahan area. Parking is permitted on public streets such as Bear Mountain Drive, south of Wildwood; and along Lehigh Street. This is an access point, not a trailhead.


Please keep your car doors locked and your car windows rolled up at all times while leaving your vehicle parked at OSMP trailheads. Also consider leaving important valuables at home or take them with you while visiting open space. To report suspicious activity please call City of Boulder Dispatch 303-441-3333 or Boulder County Dispatch 303-441-4444. For crimes in progress, call 911 immediately.


An RTD bus passes very close to this access point. Learn about Taking the Bus to OSMP.


View Shanahan Ridge Area Trail Map pdf

Shanahan Trail can be taken to either the North Fork or South Fork of the Shanahan through ponderosa pine savannah. Both trails intersect with the Mesa Trail.


No facilities available.


No picnic facilities.


No bicycles are allowed in this area.


Shanahan Area Dog Regulations Map

Learn about bringing your dog to OSMP. Dog control requirements vary from trail to trail, so carefully watch for dog regulation signs at trailheads and trail intersections. On most OSMP trails in this area, dogs must be on a hand-held leash at all times unless they meet the voice and sight control standard and display a City of Boulder Voice and Sight tag. Dog excrement removal is required by law. A dog station is available to aid in the collection of dog excrement.


Horses are allowed on most trails. On-trail riding is encouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.


Black bears and mountain lions occur in this area. Mule deer, coyotes and porcupines also inhabit the area. Abert's squirrels can be found along with numerous raptors, including the endangered peregrine falcon.


  • Site of early local ranching. Early history of Native American sites. Homestead remnants in the area.