wild flowers

trail running


no dogs


nature trips


Rancho San Antonio County Park is a popular park in the South Bay Area that offers 29 miles of hiking, trail running, cycling, and equestrian trails that connect to the nearby San Antonio Ranch Open Space Preserve. Several challenging trails through this park lead to Black Mountain, whose summit is located in adjacent Monte Bello Open Space Preserve. The trail system goes through a variety of diverse environments including valleys, creeks, and ridges. The park is best suited for hiking and trail running. The PG&E Trail is a popular trail for runners. This trail stretches along rolling hills and electricity towers and provides a good cardio workout. Other popular trails include Wildcat Canyon Loop, Coyote Trail, Deer Hollow Farm Trail, which is great for kids, and the various trails that lead to Black Mountain, from Hidden Villa Trailhead and Rhus Ridge Trailhead. The park also provides opportunities for bikers and equestrians with cycling and equestrian trails and there is a large equestrian staging area. Bikes are only permitted on paved trails such as the Rancho San Antonio Trail. Horses are limited to the staging area the Coyote Trail, a;though horses are permitted on most trails within the Open Space Preserve. The South Meadow area adjacent to the staging area has a water trough for horses. The North Meadow area, across Permanente Creek from the parking area, has four tennis courts, a few picnic tables, and barbecues. Deer Hollow Farm, managed by the City of Mountain View, has farm animals, making it a great family activity. There are multiple parking lots in the park, however the parking lot can get crowded on weekends so it is best to get there early. Dogs are not allowed in the park.

I love this trail — especially the animals, including my hiking buddy.

Very nice views and lot of trail options

I'm visiting from WA, and decided to check out this trail today.

Trail is super well-maintained, and there are pretty cool views of Silicon Valley and Black Mountain (and some surrounding ridges) along the way. The end of Black Mountain Trail (a radio tower) doesn't have amazing views, but it's a great hike overall. The hike itself starts out a bit steep, but becomes a gradual climb and is quite steady in its climb until the very end, where it's steep again.

Made it to the top in about 1:45. I didn't drive there (took a Lyft), but the parking lot was completely full by the time I descended.

1 month ago

Decent hike but it was quite dry when I did it and not much shade. Only went out and back on PG&E and turned back at the peak. Pretty tough hike with a 6 month old.

The farm was the best part!

Beautiful walk

Trail is good and lot of people will be hiking during weekends. I have been to this place twice and it’s worth to hike.

new years day hike

The Wildcat loop takes you into a pretty ravine with a babbling brook, then leads you to Deer Hollow farm with pigs and goats. It is aptly named, as five young deer were grazing right by the trail with no concern about humans. Nice hike.

1 month ago

Nice view.

on Wildcat Canyon Loop

1 month ago

Perfect for 2 hr hike

Relative flat trail to enjoy nature with deers roaming, woodpeckers chipping and wild turkeys!

Amazing views of nature, wildlife, and even a small farm.

Plenty of parking with water fountains throughout trails.

trail running
2 months ago

Starting from the main parking lot it’s a fun 7.1 mile run. It begins with a mile of flat for warmup and then progress into a 2 1/2 mile climb to the top. Once at the top you have 3 miles of Technicial down hill through a mostly shade trail to deer hollow. And them finishing in the parking lot.

lots of up and down. tiring but worth the effort

Great hike! Lots of great scenery and trees. I would do it again.

This is not a really hard trail. Trails from hidden village to Black Mountain are marked as moderate and easy in AllTrails.com. Only a few parts of the trail is steep and the remaining is moderate. There are several local runners train on this trail. I and my friend finish in 3 hour and 15 minutes without running. If the weather is clean, you can see SF from the trail near to summit.

Great views

Make sure you get to the parking early. It fills up very fast

Shaded in some parts. Nice view of the bay and valley.

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