7 a.m. to sunset.
$7 or free for Regional Parks members. (The parking fee can be paid by cash or check only at this time.) The park entrance is along Sonoma Mountain Road just east of Pressley Road.
Dogs are not permitted on trails at this time.
Several accessible parking spaces are available, including one located near a vista point. The first 800 feet of the Ridge Trail are wheelchair accessible. The trail segment leads to a creekside picnic area in the redwoods.
North Sonoma Mountain Regional Park and Open Space Preserve is the newest addition to Sonoma County's park system. The 820-acre park offers sweeping views of the county and beyond and includes a 4-mile Bay Area Ridge Trail connection to Jack London State Historic Park.
Sonoma Mountain is a defining landform in the county, and this park provides the first public access to the mountain's north slope. The park's Ridge Trail begins in the ferns and redwoods on the south fork of Matanzas Creek, then climbs to nearly 2,000 feet. It winds through forests of oaks and bay laurels and treats hikers to stunning views of the peaks surrounding Santa Rosa and Sonoma Valley. (See a slideshow of trail photos.)
Additional trails include a wheelchair-accessible vista point above the park entrance and the Umbrella Tree Trail, a 1-mile trail to a majestic bay tree and a picnic table with views of Santa Rosa and Bennett Valley. Other picnic options include two creekside tables in the redwoods near the Ridge Trail foot bridge.
All trails are open to hikers, bikers and equestrians, though bikes on the Ridge Trail are limited to the first 2 miles. We suggest equestrians first visit without their horse trailers so they can acquaint themselves with the park entrance.
Note: The park does not have a drinking fountain at this time, so please bring your own water.
North Sonoma Mountain Ridge Trail
Length:3.8-miles one way
Hiking Time:About three hours one-way at a moderate pace
Difficulty:Moderate to strenuous
The North Sonoma Mountain Ridge Trail is a nearly 4-mile trail that climbs to nearly 2,000 feet and the western boundary of Jack London State Historic Park. This trail appeals to hikers seeking a moderate to strenuous outing. Hikers wanting an easier walk can return at any point before reaching Jack London.
The trail begins near a grove of towering coast redwoods and a foot bridge over the south fork of Matanzas Creek. It then crosses open fields and winds up the mountain's north slope, through stands of oaks and bay laurels and meadows of native bunchgrass. Most of the trail is forested, and some sections open to stunning views of the Santa Rosa Plain, Bennett Valley and Sonoma Valley. Hikers are treated to 180-degree views of Taylor and Bennett mountains, Mt. Saint Helena, Hood Mountain, Sugarloaf Ridge and other North Bay peaks. Winter and spring hikers will see vernal pools and colorful wildflowers. At the connection with Jack London, ambitious hikers can continue into the state park and explore its 26-mile trail network.
The trail is a piece of the larger Bay Area Ridge Trail, an evolving effort to create 550 miles of continuous public trail ringing San Francisco Bay. Segments of the Bay Area Ridge Trail also are located within Jack London, including a new 1.2-mile section on the mountain's east slope. With the opening of North Sonoma Mountain, there are now about 9 miles of Bay Area Ridge Trail on the mountain.
Umbrella Tree Trail
Length:1-mile one way
Hiking Time:One hour
Difficulty:Moderate to strenuous
The Umbrella Tree Trail is a steady climb of about 1 mile to a giant California bay tree and gorgeous views. The trail begins near the accessible parking area above the ranger residence and follows a former ranch road that winds through forests of oaks and bays.
Most of the climb is shaded by woods, but the last section opens to expansive grasslands. Hikers will find the enormous Umbrella Tree standing sentinel at the edge of the mountain, at an elevation of about 1,500 feet. To the west are uninterrupted views of Santa Rosa, to the north are sweeping views of Bennett Valley, and adjacent to the tree is a lone picnic table perfect for taking in the sights.
The entrance to North Sonoma Mountain Regional Park and Open Space Preserve is about 5 miles southeast of Santa Rosa. With its peak rising nearly 2,300 feet, Sonoma Mountain is a defining feature of central Sonoma County. The east side of the mountain is the backdrop for Sonoma Valley and the west side rises along Highway 101 between Santa Rosa and Petaluma. The mountain is about equal distance from Santa Rosa, Rohnert Park, Petaluma, and Sonoma. It is one of several high points in the range known as the Sonoma Mountains, with the others being Taylor Mountain, Bennett Peak, the east ridge of Tolay Lake Regional Park, and Cougar Mountain.
The park includes the headwaters to two branches of Matanzas Creek, the only remaining coast redwood groves on the mountain's north slope, large areas of continuous oak woodlands and a vernal pool with a rare buttercup plant species. The park supports the Sonoma Valley wildlife corridor, providing habitat for mountain lions, bobcats, golden eagles, western pond turtles and other animals.
North Sonoma Mountain Regional Park and Open Space Preserve is comprised of six properties, five of which were acquired by the Sonoma County Agricultural Preservation and Open Space District over the past decade and transferred to Regional Parks last year by the Board of Supervisors. The parkland stretches from south of Bennett Valley to the western boundary of Jack London State Historic Park in Glen Ellen.
Before the transfer, the District and Regional Parks collaborated with California State Parks, the Bay Area Ridge Trail Council and the California State Coastal Conservancy to build a 4.25-mile Ridge Trail section across the mountain's north slope and into Jack London State Historic Park.
he District holds a conservation easement that generally limits park activities to protect natural resources. Compatible recreational and educational uses and grazing are allowed. The District also holds a recreation covenant that ensures the county provide public access to the property in perpetuity.
A master planning process is expected to begin this year to gather feedback on the park's future uses and management. The process will consider how existing amenities are used, whether new features can be developed, and how natural resources are managed. Any future trails would be developed based on master plan recommendations.