Black Mountain via PG&E, Quarry and Black Mountain Trail

Rancho San Antonio Open Space Preserve has many beginner to intermediate hiking trails.  Deer Hollow Farm Trail Loop is a hiking trail for beginners, families, or anyone wanting to go on a short hike with nice views of the bay. The trail passes by a farm and deer can often be seen wandering around. Parking fills up early in the morning so its best to get there early, or later in the afternoon...

Just outside of Los Altos is a very long ridge of mountains, one of which is Black Mountain.  This is a very dry hike, with no tree canopy, so it can get very hot! Be aware that this can make the hike feel a lot more difficult with the sun beating down on you. Follow Rhus Ridge Trail to Black Mountain Trail, then continue on Black Mountain Trail to reach the summit. One way to the summit is al...

The Seven Springs loop is only one great option of several in the preserve. Starting from the Prospect Rd parking lot the loop is 2.8 miles of rolling hills in and out of the shade. Most of the trail is at least 2 person width so easy to walk with a friend or furry companion. There have been large bee hives in previous years, but I haven't seen any new ones since 2015. The trail climbs up to th...

From the parking lot, take the connector trail towards the Peters Creek Trail for 0.4 miles. As you descend into a small valley, notice the sound of running water that appears. When you reach the first trail intersection, turn left on the Peters Creek trail. This will give you your first encounter of the creek. Best seen in the winter and spring, the trail will bring you to a lush valley throug...

This hike is best done in the late fall, winter, and spring so that the creek is running and the hills are green. Starting at the preserve parking lot, the first half of the hike is predominantly downhill. At the main trailhead, start in the direction of the Stevens Creek Nature Trail, as told by the signs. Along the first quarter mile, you can see views of the entire preserve, with a backdrop ...

This hike can be done during any season, but for the creek to be running and for more comfortable temperatures, it is best to go on a cool winter or spring day. Starting at the preserve parking lot, take the Stevens Creek nature trail, allowing you to witness spectacular views of a large, forested valley. Turn right at the first trail intersection, taking you down into a forested canyon with a...