From Vancouver you have to take a ferry to Nanaimo then drive north to Campell River about an hour and a half on the Island Highway 19 (157 km)
A 10-minute ferry ride from Campbell River lands you at Quathiaski Cove on the west coast of Quadra Island. A 15-minute drive across to the east coast of Quadra brings you to Heriot Bay, the ferry terminal for the 45-minute ferry trip across Sutil Channel to Cortes Island. The journey from Vancouver will take about six hours if you make all your ferry connections. Once on Cortes there is good signage to help you find your way around.
Potlatch Road is on the right