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.
Visitors can meander through a variety of habitats along the preserve’s
12 miles of trails. Hikers and equestrians use the Hamms Gulch, Eagle, Razorback
Ridge, and Lost Trails to make an 8-mile loop through forested ridges to
the valley floor and back again. The Anniversary Trail provides a short
hike atop Windy Hill, with spectacular views of the bay and surrounding
valley. Popular among bicyclists is the Spring Ridge Trail, which descends
from Skyline Boulevard and continues along a grassy ridge to Portola Valley.
Windy Hill is an ideal spot for kite flying. Hang gliding, paragliding,
and remote control gliding are allowed by obtaining a special activity permit.
Please see Permit Information for details. Contact the District office for more information. Picnic tables are located
adjacent to the Spring Ridge parking area – a
super beginning to a day, or the perfect ending to a long hike!
Please bag and remove dog waste from the Preserve by packing it out.
Do NOT leave bagged waste at the Preserve or outside Preserve restrooms; the plumbing cannot tolerate plastic.
Leaving bagged waste is considered littering, and failure to comply may result in a fine.
HOW TO GET THERE
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. From Highway 280, exit Alpine Road in Portola Valley.
Go south on Alpine
Road about 2.9 miles to Portola Road (the first stop sign). Turn
right on Portola Road and travel 0.8 miles to the parking lot on
the left side of
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.
Measure AA for Access, Preservation and Restoration of Open Space Lands
On March 7, the Midpeninsula Regional Open Space District's bond measure to make major capital improvements to open space lands was assigned the letter "AA" by the Registrars of Voters in Santa Clara, San Mateo and Santa Cruz counties. More>>
Hamms Gulch, Lost, and Razorback Ridge Trails are CLOSED to equestrians.
IMPORTANT: Please be aware that seasonal trail closures may change from day to day without notice, based on changing weather conditions. Also note that during winter storm season high waters can make creek crossings hazardous, so plan your outing accordingly.