14 sub-districts along the border area of Mae Sot, Phop Phra, and Mae Ramat districts with a total area of 1,419 sq. km. (886,875 rai) • 426 km. northwest of Bangkok via Highway No. 1 and Asian Highway No. 32 (Asia Route) • Mae Sot International Border Checkpoint is a permanent checkpoint linking with Myawaddy, Republic of the Union of Myanmar, with the cross-border trade value between Thailand and Myanmar ranking first (excluding Sang Khla Buri District, which imports natural gas)