Rancho San Antonio Open Space Preserve

Rancho San Antonio Open Space Preserve is a popular natural area in the Santa Cruz Mountains offering diverse hiking trails, abundant wildlife, and family-friendly outdoor recreation close to Silicon Valley.

3,988
Acres Protected
24
Miles of Trails
350,000+
Annual Visitors
1972
Year Established

About Rancho San Antonio Open Space Preserve

 

Rancho San Antonio Open Space Preserve spans approximately 3,988 acres in Santa Clara County, California, situated in the western foothills of the Santa Cruz Mountains. The preserve features a mix of grasslands, oak woodlands, and chaparral habitats that support rich biodiversity including deer, bobcats, coyotes, and a variety of bird species. Historically, the land was part of the Mexican Rancho San Antonio land grant and later used for cattle grazing by the Murphy family before becoming protected open space in the 1970s. Today, it offers visitors well-maintained hiking and equestrian trails, picnic areas, and a staffed Deer Hollow Farm, which showcases working farm animals and agricultural education programs for families and schools. The preserve's scenic ridgelines provide panoramic views of Silicon Valley and the Santa Cruz Mountains, making it a favored spot for photographers and nature enthusiasts. Its trail system ranges from easy walks suited for all ages to moderate climbs, and the preserve has become a crucial greenbelt protecting local watersheds and habitat corridors. Proximity to urban areas and accessibility from several entrances add to its appeal as a day-use destination for outdoor recreation including hiking, horseback riding, and wildlife watching. Amenities include restrooms, drinking water, and a visitor parking area near the main entrance on Cristo Rey Drive. Rancho San Antonio is managed by the Midpeninsula Regional Open Space District and remains a well-loved site for environmental education and sustainable outdoor activities.

Highlights

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Deer Hollow Farm – Educational working farm with domestic animals

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Hayfield Valley Overlook – Panoramic views of Silicon Valley and surrounding hills

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Ohlone Wilderness Trail – Scenic and less crowded trail for backcountry hiking

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Penn Trail – Popular dog-friendly walking path connecting to Rancho San Antonio

Notable Natural Features

Deer Hollow Farm

A 12-acre working farm open to the public, offering visitors a chance to interact with farm animals and learn about sustainable agriculture.

East Bay Trail

A scenic trail popular with hikers and equestrians that traverses oak woodlands and grasslands with sweeping valley views.

Ohlone Wilderness Trail Connection

Links Rancho San Antonio to a larger network of backcountry hiking trails extending into adjacent preserves.