Take Route 4 from Bangkok to the south.

Along the way pass the provinces of Nakhon Pathom, Ratchaburi, Phetchaburi, Prachuap-Khirikan, and at Chumphon go right to Ranong. From Ranong, go south through Kuraburi and Kapoe Districts to Phangnga Province. In Phang-nga the road passes through Kuraburi, Takuapa, and Thai Muang Districts before reaching the town of Kok Kloy. Then, cross the Thao Thepkrasattri or Sarasin Bridge to Phuket Island. The distance is 867 kilometers.