The Castro Motorway Trail is a good connector between the Backbone Trail in Solstice Canyon and Bulldog Motorway to Malibu Creek. The trail passes through granite and sedimentary rock outcrops.
From the PCH, travel 5 miles on Corral Canyon Road. Travel 5 miles on Corral Canyon Road to the end at Corral Canyon Trailhead and the access to Castro Motorway. The last 0.4 miles and staging area unpaved.