The forest complex covers three national parks and one wildlife sanctuary. These are Kaeng Krachan National Park (291,500 hectares), located just four hours away from Bangkok; Kui Buri National Park (96,900 hectares); Maenam Phachi Wildlife Sanctuary (48,900 hectares); and Chaloem Phrakiat Thai Pra Chan National Park.
Kaeng Krachan Forest Complex has a total area of437,300 hectares and includes portions of Nong Ya Plong, and Kaeng Krachan districts in Phetchaburi Province and of Hua Hin district in Prachuap Khiri Khan Province.