Meng E.
12/9/2025
I love this preserve! I have been here several times over the years and it's always been a nice hike - whether for a nice stroll with kids or a nice long scenic hike. Starting from the various...
Rancho San Antonio Preserve
(771)
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[22900 - 22936] Cristo Rey Dr
Los Altos, CA 94024
Sierra Azul Preserve, managed by Midpen, spans over 19,000 acres of wilderness in the Santa Cruz Mountains, offering diverse landscapes from serpentine grasslands to dense oak woodlands. The preserve features 26 miles of multiuse trails for hiking, biking, and horseback riding, providing opportunities for visitors to explore its rich natural beauty and wildlife, including deer, bobcats, and mountain lions.
With historic significance, Sierra Azul is home to Mount Umunhum, a peak that stands at 3,486 feet and holds cultural importance for Native American tribes. The preserve's facilities, including the Mount Umunhum area, have undergone extensive restoration, enhancing public access while preserving the ecological integrity of the region.
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Reviews
4.5771 reviews
Angel G.
11/17/2025
So beautiful. Highly recommend the PG&E trail and then follow that up to the switchbacks! Parking can be a problem, get there early.
Cara M.
12/15/2025
Rancho San Antonio Open Space Preserve is one of my favorite places in Los Altos. It's a beautiful, well-maintained preserve, and you can really tell that they take great care of both the land and...
Sarika S.
11/20/2025
I've been to this park a few times over the past couple of years and always had a great experience. They have plenty of free parking available, but it can get crowded on weekends as expected,...
Joyce T.
7/14/2025
Nice park with lots of shaded trails. We tried the farm bypass trail and coyote trail, it's a pleasant hike with mild incline. Parking maybe a bit hard, go after 7pm will help.
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