Welcome to Sugarloaf Ridge State Park
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 by redwoods and ferns. With 47 family-sized campsites and 25 miles of hiking trails, it is the perfect place to spend time outdoors!
Note: Pets are permitted in the campground and picnic area and on paved roads in the main park area, but not on park trails or in the back-country regions and roads.
Current Park Conditions
Pile burn notice for Tuesday, April 8 through Thursday, April 10. View details on Park Conditions page.
Sugarloaf Ridge State Park is open every day from 6:00 a.m. to 10:00 p.m. above the kiosk. The Visitor Center is open from 9:00 a.m. to 5:00 p.m.
On the Conditions page, you can find the latest updates on trail status, special projects, weather conditions, and wildflower reports at Sugarloaf Ridge State Park. Stay informed about current trail accessibility, temporary closures due to maintenance or pile burns, seasonal weather impacts, and the latest wildflower sightings.
Calendar of Events
Camping
We have 44 campsites open, both reserveable in advance and first-come, first-served in our lovely creekside campground.
Read the Sonoma Ecology Center 2024 Impact Report!
Our parent organization, Sonoma Ecology Center, making great impacts in the areas of COMMUNITY, LAND, CLIMATE, WATER, and BIODIVERSITY in Sonoma Valley.
Camping at Sugarloaf
You can enjoy camping year-round at Sugarloaf with 47 family-friendly, alcohol-free camping spaces nestled in a large meadow and bordered by a year-round stream and a hillside forest.
Stargazing at Robert Ferguson Observatory
Completely dedicated to public viewing and education, the Robert Ferguson Observatory is the LARGEST in the western United States and it’s right here at Sugarloaf Ridge State Park.
Community-Operated Park
Sugarloaf Ridge State Park is operated by Sonoma Ecology Center and Team Sugarloaf. Learn more by visiting the Team Sugarloaf Page
The Ecology Blog
Learn about the many activities and impacts throughout Sonoma Valley of our lead organization, Sonoma Ecology Center.
55 Years For Earth Day, 35 Years for Sonoma Ecology Center
Meet Rebecca Kelly, Assistant Garden Manager at Sonoma Garden Park
This fall, Sonoma Ecology Center welcomed Rebecca Kelly to the team as Assistant Garden Manager at Sonoma Garden Park. Originally from Miami, Florida, Rebecca grew up with a love of […]
Gratitude From the Trails: A Recap of Headwaters to Headwaters 2025
Hikers gather at the Los Alamos Parking Lot at Hood Mountain Regional Park for the annual Headwaters to Headwaters Hike and Fundraiser on Saturday, April 12, 2025. Photo by Marielle […]
Stewarding Sonoma County Through Art and Storytelling
On a sunny week in March at the Boys and Girls Club of Sonoma, Julia Megna watches her students put their paintbrushes to canvas, beginning a “mural-in-parts” to express their […]
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