Costanoan and Hanna Grove Loop

Located near Walnut Creek, the trail is easily accessible from anywhere in the Bay Area. The trail is kept open year-round, and happens to be part of the American Discovery Trail and the Coast to Crest trail. If you are not done hiking, connecting trails allow you to summit Mt. Diablo.  This trail is dog friendly - but when you reach Mount Diablo State Park, please note that the park does not ...

Continue by car down Castle Rock Road until it dead ends at the beginning of the trail. Parking is usually easy to find. If full, there is another overflow lot about 500 ft back the way you came in.You'll walk a good half mile down the trail before getting the main gate. As you're walking, you'll see a swimming pool, baseball diamond, volleyball courts, basketball courts, restrooms and picnic t...

The Southern Lime Ridge Loop is a trail system located near Walnut Creek, CA. There is a parking lot at the trailhead located across the street from the Boundary Oak Golf Course. The trail is fairly exposed with limited shade, so bring appropriate sun protection especially on the warmer days.  Dogs are not permitted on this trail. 

Sugarloaf Open Space Loop is an almost 2-mile loop for hiking, running and walking. This trail is relatively easy and takes under one hour to hike. This loop is dog friendly. 

Mt. Diablo has some of the most expansive views in California, despite it's relatively low peak elevation. It played a large role in the surveying the Bay Area during its early discovery. Getting There: To get to the staging area, take Interstate 80 to I-680 to Highway 4. Exit at Railroad Boulevard in Pittsburg. Drive 4 miles over the foothills. Railroad turns into Kirker Pass Road. Turn le...

Mount Diablo's summit in Mount Diablo State Park rises to 3,848ft, with Juniper Campground in Mount Diablo SP is at approximately 3,000ft in elevation.  Juniper Campground overlooks the valley below and some of the San Francisco Bay.  Reservations for Juniper Campground can be made at Reserveamerica.com.  Check in for the campground is at 2:00pm and check out is at 12:00pm. Keep in mind that fi...