Sugarloaf Ridge State Park is a natural gem nestled in the heart of Sonoma County, offering diverse landscapes and activities for visitors of all ages. As the headwaters of Sonoma Creek, the park features stunning gorges, meadows, and rock outcroppings surrounded by redwoods and ferns. Hikers and equestrians can explore 25 miles of trails, including the summit of Bald Mountain, which boasts breathtaking views of the Sierra Nevada and Golden Gate Bridge. Wildlife such as deer, gray foxes, and bobcats roam freely, while vibrant spring wildflowers blanket the hills. Visitors can also enjoy a self-guided nature trail, a seasonal waterfall, and the renowned Robert Ferguson Observatory, home to some of the largest telescopes for public viewing. Dogs are allowed in picnic areas and campgrounds but not on trails. With its blend of natural beauty and unique educational experiences, Sugarloaf Ridge State Park is an ideal destination for outdoor enthusiasts.

Trail Highlights

• Distance: Options from 4 to 15 miles
• Terrain: Varied, with steep climbs and ridgeline trails
• Best For: Intermediate to advanced runners

Parking and Facilities
The main entrance is on Adobe Canyon Road. Parking is available, and restrooms are located at the visitor center. A day-use fee is required.

Sugarloaf Ridge State Park

Trail Map (Strava link)	Length	Elevation Gain
Lower Bald Mountain Loop	4.0 miles	820 feet
Big Bald Mountain Loop	8.0 miles	2144 feet
Sugarloaf Lollipop	11.1 miles	2747 feet
Sugarloaf Big Loop	15.1 miles	4205 feet

Share Your Trail Adventures

Ready to contribute to our trail-running community? If you’ve mapped out a favorite route or have GPX files to share from your runs at Sugarloaf Ridge State Park or other Sonoma County trails, we’d love to feature them! Leave a comment below to share your maps and inspire others to explore these breathtaking trails: