Las Trampas and Rocky Ridge Loop

Las Trampas Regional Wilderness offers an extensive trail system for hikers, horseback riders and mountain bikers. The trail is open year round and dogs are allowed. The Las Trampas and Bollinger faults spread apart to reveal a wonderful wilderness area with ancient remnants of beaches. The entire Pinole Tuff is of volcanic origin. Watch for hawks, eagles and snakes. Bring extra water!

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. 

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...

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 ...

Although steep in sections, this trail is a wonderful workout and hikers are more than rewarded for their efforts. The Rock City Trail is a direct route to the summit of Mount Diablo, and the park is an ecological treasure dear to the hearts of Bay Area residents. The best views are on clear days immediately after rain or a storm - if you are lucky, you'll even be able to see the distant Sierra...

This hike starts at the Rock City area of Mount Diablo State Park. Begin at the Madrone Canyon Trail, hiking southeast towards the Devils Slide trail. Along this section of the hike, the trail dips into a wooded canyon and follows the path of a small creek. To best experience the beauty of the creek, this hike is best done during the spring and winter when the rains replenish the groundwater. A...