Take Highway No. 4 on the Bangkok-Prachuap Khiri Khan-Chumphon route and then Highway No. 41 past Surat Thani-Thung Song until arriving in Nakhon Si Thammarat or Amphoe Phun Phin in Surat Thani, then take Highway No. 401 along the coast to Nakhon Si Thammarat, total distance of 780km