Fossil Hill, Briones to Mt. Diablo, Ginder Gap, and Coral Spring Loop

Starting from the Sutherland Drive trailhead, this loop explores some of the most scenic areas of Shell Ridge Open Space, following Fossil Hill, Briones to Mount Diablo Trail, Ginder Gap, and Coral Spring Trail. Along the way you'll pass rolling grasslands, oak woodlands, and seasonal wildflower displays, with sweeping views of Walnut Creek and Mount Diablo.

This easy 3.7-mile loop features 623 feet of elevation gain and a mix of paved and natural trails, making it a rewarding way to experience Shell Ridge's diverse landscapes. Parking is limited at the Sutherland Drive trailhead, with additional access available from the Marshall Drive entrance.

Source: Trail information adapted from AllTrails.