Windy Hill Open Space Preserve

Windy Hill has about 1300 acres of land with about 12 miles of multiuse dirt trails for hikers, bicyclists and equestrians.  Habitats include forested ridges, valley floors (Hamms Gulch, Eagle, Razorback Ridge, and Lost Trails), grassy ridges (Spring Ridge Trail) and spectacular views of the bay and surrounding valley (Anniversary Trail). The Betsy Crowder, Razorback, Lost, and Hamms Gulch Trails are open to horses and closed to bicycles all year round.


Dogs must be on leash at all times on designated trails only, and owners must clean up after their dogs. 

Operating Hours

Park is open from 6 a.m. to one half hour after sunset.

Disabled Access

The picnic area at the upper end of Windy Hill Open Space Preserve is wheelchair accessible. Three tables are located in a grassy area with beautiful views overlooking Portola Valley. There is a wheelchair accessible restroom.


Click for Map


Willowbrook Dr & Portola Rd

Visit Google Maps for this Address


The parking lot at the lower portion of the preserve is located on Portola Road. From Highway 280, exit Alpine Road in Portola Valley, head south on Alpine Road for about three miles to Portola Road (the first stop sign). Turn right on Portola Road and travel about one mile to the parking lot on the left side of the road. Parking for the upper portion of the preserve, the Spring Ridge parking area, is located on Skyline Boulevard (Highway 35), about two miles south of Highway 84 (La Honda Road) and five miles north of Page Mill Road. Additional roadside parking is available along Skyline Boulevard.

Contact Info

Phone: 650-691-1200 or email