Rancho San Antonio Open Space Preserve wilderness guide
Open Space Preserve · CA

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.

Open Space Preserve3,9884+ Trails

Designation

Open Space Preserve

Total Wilderness Area

3,988

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About 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.

Wilderness Landscape & Natural Heritage

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.

Field Guide · Open Space Preserve
Adventure Destinations

Notable Destinations Near Rancho San Antonio Open Space Preserve

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ Deer Hollow Farm – Educational working farm with domestic animals✦ Hayfield Valley Overlook – Panoramic views of Silicon Valley and surrounding hills✦ Ohlone Wilderness Trail – Scenic and less crowded trail for backcountry hiking✦ Penn Trail – Popular dog-friendly walking path connecting to Rancho San Antonio
Wilderness Recreation

Outdoor Adventures in Rancho San Antonio Open Space Preserve

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in Rancho San Antonio Open Space Preserve
Park Recreation

Wildlife Viewing

Available in Rancho San Antonio Open Space Preserve
Park Recreation

Horseback Riding

Available in Rancho San Antonio Open Space Preserve
Park Recreation

Picnicking

Available in Rancho San Antonio Open Space Preserve
Park Recreation

Photography

Available in Rancho San Antonio Open Space Preserve
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Rancho San Antonio Open Space Preserve.

Passes & Fees

Entrance Requirements & Interagency Passes

Free entry; parking fee applies at main parking lot, no permits required

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Rancho San Antonio Open Space Preserve

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Los Altos, California
⌖ 2.82 miles
Gateway Basecamp

Los Altos, California

Los Altos offers easy access to scenic foothill trails for hiking and biking, peaceful parks for picnics, and calm waters for paddling. Its mild climate makes it a great destination for outdoor lovers year-round.

Spring through Fall
Explore Town
Los Altos Hills, California
⌖ 3.04 miles
Gateway Basecamp

Los Altos Hills, California

Los Altos Hills offers quiet hillside trails, gentle biking routes, and nature-focused outdoor experiences just west of Silicon Valley. Ideal for relaxed hikes, scenic rides, and wildlife viewing in a peaceful setting.

Spring through Fall
Explore Town
Mountain View, California
⌖ 4.26 miles
Gateway Basecamp

Mountain View, California

Mountain View offers a blend of urban convenience and accessible outdoor escapes. Explore scenic hiking and biking trails, paddle calm waters, and spot diverse birdlife in nearby preserves just minutes from the heart of Silicon Valley.

Spring through Fall
Explore Town
Cupertino, California
⌖ 4.86 miles
Gateway Basecamp

Cupertino, California

Cupertino offers outdoor enthusiasts access to scenic hiking and biking trails in the nearby Santa Cruz Mountains. With reservoirs for paddling and several protected natural preserves, it's a great basecamp for day trips and nature escapes year-round.

Spring through Fall
Explore Town
Sunnyvale, California
⌖ 5.40 miles
Gateway Basecamp

Sunnyvale, California

Sunnyvale offers a mix of accessible outdoor fun with hiking, biking, and paddling close to Silicon Valley. Its parks and baylands provide great spots for nature lovers and active travelers from spring through fall.

Spring through Fall
Explore Town
Portola Valley, California
⌖ 6.37 miles
Gateway Basecamp

Portola Valley, California

Portola Valley offers tranquil outdoor adventures with scenic hiking and biking trails winding through protected hills and redwood groves. Ideal for nature lovers seeking peaceful day trips near the San Francisco Bay Area.

Spring through Fall
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Rancho San Antonio Open Space Preserve

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

Champagne Sunset Sail: Catamaran Twilight over St. Thomas
ADVEXPEDITION
San Jose, California
Boat TourADV Bookable

Champagne Sunset Sail: Catamaran Twilight over St. Thomas

A two-hour sunset cruise aboard a catamaran with an open bar and heavy appetizers — this guide distills the logistics, highlights, and what to expect for the Margarita‑ville departure.

Boat TourPT2HCertified Outfitter
Bookable OnlineBook Trip