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
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.
Sonoma Ecology Center Wraps Up Another Semester of Teen EnviroLeaders Program
EnviroLeaders Christian and Yomi consult with Sonoma Garden Park Assistant Manager Rebecca Kelly (left) on a weeding project.Since its inception in 2008, Sonoma Ecology Center’s EnviroLeaders program has been instrumental […]
Sonoma Ecology Center Receives Grant from Impact100 Sonoma to Support Outdoor Gear Lending Library at Sugarloaf Ridge State Park
Sonoma Ecology Center (SEC) is proud to announce we have been awarded a $14,000 Impetus Grant from Impact100 Sonoma to support the permanent implementation of an important community resource: the […]
55 Years For Earth Day, 35 Years for Sonoma Ecology Center
Photo by Marielle V Chua This article, written by Sonoma Ecology Center board member David Morell, was originally published in the Sonoma Sun on April 19, 2025. Never since its […]
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 […]
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