Trione-Annadel State Park

Sonoma County, California · State Park

A 5,000-acre state park near Santa Rosa featuring oak woodlands, grasslands, and volcanic rock formations, popular for hiking, mountain biking, and horseback riding around Lake Ilsanjo.

Top trails

• Canyon Trail to Spring Creek Trail Loop — 7.4 mi loop
• Marsh Trail — 4.2 mi loop
• Ridge Trail — 4.1 mi one way
• Lawndale Trail — 2.8 mi one way
• Cobblestone Trail — 2.3 mi one way

Coordinates: 38.4522, -122.6346.

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