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Sugarloaf Ridge State Park



  • Directions

  • Size

    4696.90 acres

Contact Information


Sugarloaf Ridge State Park contains the headwaters of Sonoma Creek. It runs through gorge and canyon, across the meadow floor, beneath scenic rock outcroppings, and is surrounded at times by redwoods and ferns. A 25-foot waterfall flows after the winter rains. There is a self-guided nature trail along Sonoma Creek that starts near the picnic area.

Within the oak woodland and chaparral, the park has 25 miles of trails for hiking and horseback riding.  Deer, gray foxes, the occasional bobcat and coyote can be seen in the park. In spring, wildflowers provide a colorful palette across the green hills. On a clear day, visitors can see views of the Sierra Nevada and the Golden Gate bridge from the 2729-foot summit of Bald Mountain.

The non-profit Valley of the Moon Observatory Association provides year-round astronomy education and interpretation programs at the Robert Ferguson Observatory within Sugarloaf Ridge State Park.  Program fees vary, some are free with the payment of the park's Day Use Fee. There are three telescopes and the New Generation 40-inch Telescope Project at the Ferguson Observatory which will be one of the largest telescopes dedicated for public viewing. 

Allowed Activities
Mountain Biking
Horseback Riding
Rv Camping
Tent Camping
Wildlife Watching
Road Biking
Good For
Rules & Regulation
Dogs Permitted With Restrictions

Additional Information

Accessibility Description

Overview Sugarloaf Ridge State Park offers hiking, camping and horseback riding along a variety of terrains. The park is in Kenwood off Highway 12 at the end of Adobe Canyon Road. Phone 707-833-5712.

Camping Campsites # 6, 7, and 12 are accessible. A restroom with showers is accessible. The campfire center is also accessible with a variety of wheelchair seating areas. The accessible route to the campfire center begins near campsite #12.

Picnic Area The picnic area is accessible and includes an accessible vault restroom.

Trails The Meadow Trail is an old fire road that leads to a stream and is used as a trail by hikers, bikers and equestrians. It may be accessible for about 3/4 mile. Occasionally gravel works loose and limits accessibility. The trailhead is approached from the day use parking lot. Restroom. An accessible portable toilet is near the visitor center. Parking. The day use parking area currently has no lined spaces, but the surface is firm and stable.

Exhibits/Programs Visitor Center. The visitor center has accessible parking and routes to the building, portable restroom, and information area.

Robert Ferguson Observatory. Rooms and route to telescopes are generally accessible, but paths of travel in the library are only 30” wide. Telescope eyepieces may not suit everyone’s needs. Call observatory ahead at 707-833-6979 to discuss your needs. Restrooms are generally accessible. Parking. A designated accessible parking space is available in an adjacent lot. Route of travel from parking space is hard-packed gravel that is generally accessible. It may occasionally work loose and require some assistance, but the space is adjacent to the observatory.


Open for Day Use and Camping


Dogs must be on a leash under your control at all times. Dogs are not allowed on trails. Dogs must be in a tent, camper or enclosed vehicle during the night.