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.
Weather Conditions: All roads and trails are open, but trail conditions are wet and slippery, with some water crossings impassable on Goodspeed, Gray Pine, and Pony Gate. The storm caused some small slides and rockfalls, so drive carefully. The campground is OPEN. Please report any issues to the park staff by calling 707-833-5712 or emailing sugarloaf@sonomaecologycenter.org.
Condiciones en el parque: todas las carreteras y senderos están abiertos, pero los senderos están mojados y resbalozos, con algunos cruces de agua actualmente impasables en los senderos Goodspeed, Gray Pine, y Pony Gate. La tormenta causó pequeños deslaves, así que por favor conduzce con cuidado. Por favor avisanos de problemas llamando al 707-833-5712 o por email en sugarloaf@sonomeacologycenter.org.
Notice: Pile burns at Sugarloaf Ridge State Park starting today, February 5. Visit the Park Conditions Page for pile burn updates and information on trail closures, conditions, and estimated reopening timelines to help plan your visit safely and responsibly.
Aviso: habrá quema de pilas en Sugarloaf Ridge State Park hoy, 5 de febrero. Visita la página “Park Conditions” para noticias acerca de la quema de pilas e información acerca de senderos cerrados y su estimada hora de abrir para ayudarte a planear tu visita seguara y responsablemente.
Camping
We have 44 campsites open, both reserveable in advance and first-come, first-served in our lovely creekside campground.
Calendar of Events
Support Sugarloaf
Your donations help keep Sugarloaf open for all!
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.
Sonoma Floods Again—an Eventful Week for our Watershed
A powerful storm flooded Sonoma this past Tuesday, February 4, 2025, following another atmospheric river event over the weekend. 2.75 inches of rain fell on Tuesday in Sonoma, adding to […]
Remembering the Red Barn: A Legacy of Homesteading, History, and Renewal at Sugarloaf Ridge
September 2024 marked the four-year anniversary of the Glass Fire that destroyed the historic Red Barn at Sugarloaf Ridge State Park. Built over 100 years ago by the Hurd family, who homesteaded the area in 1914, the barn became a beloved landmark for hikers. Over time, the property changed hands, eventually becoming part of the state park in the 1960s. Professional photographer Diane Askew captured some of the last images of the barn before its destruction, preserving its memory. Diane’s photos now serve as a tribute to both the barn and her legacy following her passing in 2021.
Fungus Among Us February 6-9, 2025
By James Webb About James (Jim) Webb: Jim began volunteering with Sugarloaf Ridge State Park last February 2023 as a trail patrol volunteer. His experience in previous work with USFS […]
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 […]