10 min
Going downhill on Whiting Rd, look for a wide singletrack that breaks off to the right beneath the trees, this is Serrano Cow Trail, one of the best trails in the park. A lot of the trail is beneath the oak trees and the smooth, flowing singletrack weaves in and out of them, crossing a creek bed a few times along the way. The trail straightens out and merges with Serrano Creek Trail, a wide, sandy road where you can do 25 mph if you have the legs.
Views are in abundance from the highest point on Line Shack. Looking back towards coastal OC.