The Smith/Marlborough Ridge trail is an abandoned trail that is not maintained . Trail is marked by cairns in spots most of it is line of site. Nice work out!!
Hike from Old Toll Rd parking area - Halfway House Trail - White Arrow - Amphitheatre - Smith Summit - Mt. Rosa - Smith/Marlborough - Marlborough - Summit
Return down White dot - White Cross - Smith Connector - Bald Rock - Hello Rock - Halway House - Parking Area
7 miles 4-5 hours