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Coal Mine Ridge (Portola Valley)

This area is owned by Portola Ranch Homeowners association and they allow the public to use the land.  The dirt trails are a combination of narrow and wide, with a mix of sun and shade.  The largest elevation change is 500 feet.  Please note that the Toyon trail is for pedestrian only and some of the trails do not allow dogs.  There is no drinking water, restrooms or food nearby.

Windy Hill Open Space Preserve (Portola Valley)

Windy Hill has about 1300 acres of land with about 12 miles of multiuse 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.