• Fritillaria

  • Trillium

  • Western Hounds Tongue

  • Unknown

  • Miners Lettuce

  • Poison Oak

  • Pacific Shooting Star

  • Sword Fern

Windy Ridge OSP

Windy Hill is named for its distinctive, breezy grass-covered hilltop, which can be seen from many areas of the peninsula. The 1,335-acre preserve features open grassland ridges and forests of redwood, fir, and oak. Peninsula Open Space Trust, a local non-profit land trust, provided major support for acquisition of this preserve.


Windy Hill Open Space Preserve is located in the Town of Portola Valley.

The parking lot at the lower portion of the preserve is located on Portola Road. Parking is available for 25 vehicles.

Please note: This parking lot on Portola Road fills quickly. Overflow parking is available at the Portola Valley Town Center, approximately 0.4 miles north on Portola Road. Please do not park on Portola Road: parking is strictly enforced.

Equestrian trailer/bus parking: Equestrian trailer/bus parking is available, courtesy of the Town of Portola Valley, at the driveway entrance to the Spring Downs Equestrian Center at 725 Portola Road. The driveway off Portola Road is town property, and there is a gravel area to the left of the paved driveway that is suitable for trailer/bus parking. A ½-mile roadside trail runs from the driveway to the Windy Hill parking lot on Portola Road.

Please note: Spring Down is a private facility, and District visitors should not enter that area.

Parking for the upper portion of the preserve, the Spring Ridge parking area, is located on Skyline Boulevard (Highway 35), 2.3 miles south of Highway 84 (La Honda Road) and 4.9 miles north of Page Mill Road. Additional roadside parking is available along Skyline Boulevard.

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