Phahonyothin Road

Phahonyothin Road (, Thanon Phahonyothin) or Thailand Route 1 is a major road in Bangkok and one of the four major highways in Thailand, which include Mittraphap Road (Route 2), Sukhumvit Road (Route 3), and Phetkasem Road (Route 4). It begins at Victory Monument in Bangkok and runs north to the Burmese border, with a total length of .