Trang (also Muang Thap Thiang, Thai: ตรัง) is the one of the southern provinces (changwat) of Thailand, at the western shore of the Malay Peninsula to the Andaman Sea. Neighboring provinces are (from north clockwise) Krabi, Nakhon Si Thammarat, Phatthalung and Satun.

Prachin Buri (Thai: ปราจีนบุรี) is a province (changwat) of Thailand. Neighboring provinces are (from north clockwise) Nakhon Ratchasima, Sa Kaeo, Chachoengsao and Nakhon Nayok.

Ko Mak has 27 km coastline, many long sand beaches, a few hills and it is about 16 km² in area. On low tide, it is possible to walk to Ko Kham, which is a smaller island less than 1 km northwest from Ko Mak. Ko Phi, also north west from Ko Mak but southwest from Ko Kham, is not occupied.

Chiang Mai (Thai เชียงใหม่) is the second-largest province (changwat) of Thailand, located in the north of the country. Neighboring provinces are (from northeast clockwise) Chiang Rai, Lampang, Lamphun, Tak, and Mae Hong Son. In the north it borders Shan State of Burma.

Chanthaburi (Thai: จันทบุรี) is a province (changwat) of Thailand. It is located in the east of Thailand, at the border to Battambang and Pailin of Cambodia  and the shore to the Gulf of Thailand. The neighboring provinces are Trat  in the east and Rayong, Chonburi, Chachoengsao and Sa Kaeo.