Pantoll Road and West Ridgecrest Road CA 94970United StatesGet Directions
From US 101 in Marin County, exit #445b CA 1/Mill Valley/Stinson Beach and drive on Shoreline Highway to the junction with Almonte (look for the CA 1 sign), about 1 mile. Turn left, continuing on Shoreline, and drive about 2.5 miles to the junction with Panoramic Highway. Turn right on Panoramic and drive about 5.5 miles to the junction with Pantoll Road. Turn right onto Pantoll and drive another 1.5 miles to the Rock Spring Trailhead, which is at the junction of East and West Ridgecrests.