San Geronimo, California

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...

Lamb Boulder, located within the "Sunset Boulders" collection, contains four fun and challenging V2 - V6 bouldering routes. They are: Calambity: V6Rock Scar: V3+Skullcracker: V2 RThe Specialist: V4 Lamb Boulder is located directly across from the Sunset Boulder itself and its trad routes. To get ...

The "lollipop" hike starts at the "Ranch House" parking lot off of Chiles Pope Valley Road - alternatively, you can access from Conn Valley Road for a shortened 5.6-mile loop. You turn off Chiles Pope Valley Road onto Moore Creek Trail, drive past a private house (you can see it on the map) and t...

Start at the visitor center along Kelly Avenue. Take note that the day parking fee is $10 in 2016 for each vehicle. You will then be able to enjoy both the Coastside Trail and Francis Beach (plus other beaches) with access to the amenities such as coin-operated showers and a semi-private beach.Th...

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 Bouleva...

The incline on this trail begins pretty much right away and is fairly gradual for the entire hike, some of it is quite rocky, making this an easy to moderate level hike. However, with some shade (probably wouldn't attempt it on a hot summer day) and the sweeping views of the valley that get bette...

Bald Hill is the first serious peak/summit that can be reached via the Oat Hill Mine Trail as it breaks from the more popular loop and heads into the heart of Robert Louis Stevenson State Park. To get there you can either begin at the less frequently used trailhead at Picket and Rosedale Roads he...

The Parson Jones Tree is the tallest tree in the reserve, measuring more than 310 feet (94 m) in height. This is longer than the length of a football field!  Named after a lumberman who chose to preserve this portion of the park in the 1870s, the Colonel Armstrong Tree is the oldest tree in the ...

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 Reserveamer...

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 cr...

Begin your ride from Lagoon Valley Park in Vacaville, California. There is a parking lot here if you drive to the start of your ride (the park entrance fee is $3 per vehicle per day). Head out of the parking lot and turn right onto Rivera Road where you'll cross over Hwy 80. The road becomes Cher...

This beautiful mountain bike ride can be started at the Purisima Creek Road Trailhead or on Skyline Boulevard. There are many trails in the Purisisma Creek Redwoods, but Whittemore Gulch is by far the most beautiful and fun single track to descend on. If you are starting from Skyline Boulevard, i...

This trail begins at the Cowell State Beach parking lot and is only open on the weekends. From the lot, take the short Cowell Ranch Access trail to a scenic overlook. There are steps down to the secluded pocket beach just above the main trail. The trail playfully meanders along the cliffside with...

This hike is perfect for any time of year, always staying cool because it is near the coast, and there are multiple creeks that flow year-round. Even on foggy days, the fog condenses on trees to make it seem like it is "raining." Be warned that this hike has a lot of elevation change and is stre...

This is a great hike for any season of the year, with rushing streams during the winter, wildflowers in the spring, and cool, shaded canyons during the summer. Starting from near the Zwierlein Picnic area, take the Crystal Springs to the left into the redwood forest. Stay straight at the next tra...

This loop hike will provide people with the opportunity to experience the tranquility of the lower canyons of the preserve, which tend to be more isolated than the heavier-trafficked trails that are closer to the main highway. Be warned that this hike is fairly strenuous because of the large amou...