Sugarloaf Ridge State Park

Park in Glen Ellen & Kenwood

There are 30 miles of fantastic hiking – when it's not blazingly hot. On clear days, Bald Mountain has drop-dead views to the sea, while the Brushy Peaks Trail peers into Napa Valley. Both are moderately strenuous; plan on a three-hour round-trip. Bikes and horses can use perimeter trails seasonally.

There's a small but well-stocked visitor center.