Phitsanulok is a province of central Thailand. It borders the provinces of Uttaradit to the north, Loei and Phetchabun to the east, Phichit to the south, Kamphaeng Phet to the southwest, and Sukhothai

Sukhothai is a province in lower northern Thailand. Neighboring provinces are Phrae, Uttaradit, Phitsanulok, Kamphaeng Phet, Tak, and Lampang. Sukhothai is located in the Yom river basin which has ser