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!
Scheduled Road Work (Sept 9-Sept 19):
California State Parks subcontractors will be fixing and repaving Adobe Canyon Rd within Sugarloaf Ridge State Park starting Monday, September 9, and possibly lasting until Friday, September 19. Expect the road to be closed weekdays in the morning into the early afternoon. Specific times to follow.
Trabajo de mantenimiento programado en la carretera (Sept 9-Sept 19):
Subcontratistas con California State Parks reparan y pavimentaran Adobe Canyon Rd dentro de Sugarloaf Ridge State Park comenzando el lunes 9 de septiembre y posiblemente durando hasta el viernes 19 de septiembre. Anticipa que la carretera este cerrada entre semana, particularmente durante las mañanas hasta la tarde. Horas específicas serán publicadas cuando las tengamos.
See the park Conditions Page for:
Trail closures/conditions, Wildflower report, Links to weather conditions at the park, and Other park info as needed.
Camping: We have 44 campsites open, both reservable in advance and first-come, first-served in our lovely creekside campground.
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Read the Sonoma Ecology Center 2023 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 activites and impacts throughout Sonoma Valley of our lead organization, Sonoma Ecology Center.
Meet Marielle: Our Volunteer Photographer
This year, we warmly welcomed a local photographer, Marielle V Chua, to the Sonoma Ecology Center family. Marielle’s photographs intimately capture the natural beauty of Sonoma Valley that inspires our […]
Improving Soil Health Using Biochar Throughout the East Bay
Since 2022, Sonoma Ecology Center has worked with Earth Foundries as a consultant on numerous initiatives aimed at studying ways biochar can be used to improve soil health projects and provide other ecological benefits beyond Sonoma Valley.
Nathanson Creek Preserve Gets a Refresh
This Spring, Sonoma Ecology Center’s Restoration Team did a refresh of the Demonstration Garden at Nathanson Creek. Enjoy pictures of the drastic improvements!
Using Biochar to Improve Water Quality in the Bay Area
In partnership with Earth Foundries, we recently consulted on a project to sequester carbon, reduce flooding, and improve water quality in East San Jose.