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 sunrise to sunset. The Visitor Center is open 9:00 am-5:00 pm.
Visit the Park Conditions Page for information on trail closures, conditions, and estimated reopening timelines to help plan your visit safely and responsibly.
We have 44 campsites open, both reserveable in advance and first-come, first-served in our lovely creekside campground.
Calendar of Events
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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 activites and impacts throughout Sonoma Valley of our lead organization, Sonoma Ecology Center.
Transforming Playgrounds Through The Green Schoolyards Project
In October 2023, Sonoma Ecology Center (SEC) received two planning grants from CAL FIRE to provide “greening” features and designs for 12 elementary schools in underserved communities, including four in […]
Digging Our Hands Into the Community Through Volunteer Work
Every 2nd and 4th Thursday of the month, Sugarloaf Ridge State Park’s volunteer Trail Crew gathers to conduct park and trail maintenance together. Trail Crew is one of several volunteer […]
The Return of Sonoma’s Chinook
Photo courtesy of Leo DaleThis week in December marks the end of a multi-week Chinook salmon run throughout the Sonoma Creek Watershed which captivated the local community. Since late November, […]
SEC Launches Outdoor Gear Lending Library for Sonoma Environmental Education Collaborative Partners
We’re on a mission to spark curiosity, ignite wonder, and inspire the next generation of environmental stewards by getting Sonoma Valley youth outside! This year, we have launched an outdoor […]