Make your way to Paparoa either up 16 to Wellsford left onto SH1 or up thru Warkworth, left at the bottom of the Brinny's thru Maungaturoto to Paparoa. Take the Paparoa/Oakliegh rd (which is brilliant) takes you back out to SH1 then back to AKL via Waipu/Langs/Mangawhai, Highly recommended......