# Rancho San Antonio Open Space Preserve > Place to go for families in the San Jose–Sunnyvale–Santa Clara area (CA). Times are Pacific Time. - When: Open a half-hour before official sunrise until a half-hour after official sunset, daily. - Where: Rancho San Antonio Open Space Preserve and County Park, 22500 Cristo Rey Drive, Cupertino, CA 95014 - Ages: All ages - Price: Check official pricing - Schedule: Open a half-hour before official sunrise until a half-hour after official sunset, daily. - Organizer: Midpeninsula Regional Open Space District - Official page: https://www.openspace.org/ - Last checked: Sat, Oct 24 Source: Grassy Knees is a directory of real family events, places and programs for kids across major U.S. metro areas, where every listing is researched from the organizer’s own page and shows the date we last checked it. https://grassyknees.com covers 42 metro areas as of Oct 24, 2026, with more added regularly. About: https://grassyknees.com/about Freshness: listings are re-checked on a daily research run (latest check 2026-10-24), and new events are added as organizers post them. Sell-outs, weather cancellations and time changes show up on the live page first: https://grassyknees.com/san-jose/activities/rancho-san-antonio-open-space-preserve--listing-afbfdf5abea2070491b6ee4c ## About Rancho San Antonio is the Midpeninsula Regional Open Space District's busiest preserve: 25-plus miles of trails across a 2,180-acre preserve and the adjoining 293-acre county park in the Cupertino and Los Altos foothills. With younger kids, the Wildcat Loop (about 3 miles) is a favorite because it loops back past Deer Hollow Farm, the working homestead farm inside the preserve; older hikers can climb toward Black Mountain. Horses are allowed on designated trails and bikes only on designated routes. Dogs are not allowed. Restrooms are at the county park parking area. Parking can be congested at busy times, so the district encourages biking, walking, ride apps or transit. ## Similar picks in San Jose - [Coyote Valley Open Space Preserve](https://grassyknees.com/san-jose/activities/coyote-valley-open-space-preserve--listing-4cd8e90afc18620b6513dae4) — Sunday–Saturday 7:00 a.m.–6:30 p.m. Closed Monday, October 26 and Tuesday, October 27… · Coyote Valley Open Space Preserve, Morgan Hill · All ages · Free · checked Oct 24. Coyote Valley Open Space Preserve, run by the Santa Clara Valley Open Space Authority, sits on the valley floor between south San José and Morgan Hill. Its 4-mile Arrowhead Loop… - [Deer Hollow Farm at Rancho San Antonio](https://grassyknees.com/san-jose/activities/deer-hollow-farm-at-rancho-san-antonio--listing-8b428b68ea11de63f3927553) — Monday closed; Tuesday 8am–4pm; Wednesday 8am–1pm (early close); Thursday–Sunday… · Deer Hollow Farm, Rancho San Antonio Open Space Preserve, Cupertino · All ages · Free · checked Oct 24. Deer Hollow Farm is one of the last working homestead farms in California, set inside Rancho San Antonio Open Space Preserve in the foothills above Los Altos and Cupertino. It is… - [Sierra Vista Open Space Preserve](https://grassyknees.com/san-jose/activities/sierra-vista-open-space-preserve--listing-af591d199c7e6ebab83359a9) — Sunday–Saturday 7:00 a.m.–6:30 p.m. (lot closes when full or at 6:30 p.m.; visitors… · Sierra Vista Open Space Preserve · All ages · Free · checked Oct 24. Sierra Vista sits high in the eastern foothills above Berryessa and Alum Rock, with sweeping views over the Santa Clara Valley and the greater Bay Area; it is a popular sunset… - [Family Fun Zoo Class at Happy Hollow](https://grassyknees.com/san-jose/activities/family-fun-zoo-class-at-happy-hollow--listing-ec64c3ed307c40e275c7cc6f) — Sat, Oct 24 (+4 more dates) · 10:00 AM – 12:00 PM · Happy Hollow Park & Zoo · From $40 · checked Oct 24. Family Fun is Happy Hollow's Saturday-morning class for a whole family group, held inside the park and zoo in Kelley Park. Each session has its own nature theme: the Fall… - [Hidden Villa Farm and Wilderness Preserve](https://grassyknees.com/san-jose/activities/hidden-villa-farm-and-wilderness-preserve--listing-2878dd5c9c7158e09b6d148b) — Open to day visitors during posted open hours (hours not printed on the visit page… · Hidden Villa, Los Altos Hills · All ages · From $10 · checked Oct 24. Hidden Villa is a working organic farm and wilderness preserve in the Los Altos Hills foothills, run by a nonprofit trust that has hosted environmental and social-justice… - [A Mystery of Skulls Nature Pop-up at Metcalf Motorcycle County Park](https://grassyknees.com/san-jose/activities/a-mystery-of-skulls-nature-pop-up-at-metcalf-motorcycle-county-park--listing-14498187b654885ea9c20727) — Sun, Oct 25 · 10:00 AM – 1:00 PM · Metcalf Motorcycle County Park · All ages · Free · checked Oct 24. A drop-in nature pop-up run by county park interpreters: stop by any time during the three-hour window to handle animal skulls and pelts and work out what they reveal about how… ## More for families - [This weekend in San Jose](https://grassyknees.com/san-jose/this-weekend) (Markdown: https://grassyknees.com/san-jose/this-weekend.md) - [Things to do with kids in San Jose](https://grassyknees.com/san-jose) (Markdown: https://grassyknees.com/san-jose.md)