Sukhumvit Road (Thai: ถนนสุขุมวิท ) is both a major road in downtown Bangkok as well as a major highway in Thailand. The road spans a distance of 400 kilometers. Named after Phra Bisal Sukhumvit, the fifth Chief of the Department of Highways, Sukhumvit Road is one of the four major highways in the kingdom.
Sukhumvit Road begins from Phloen Chit Road west of the interchange with the 1st State Expressway, where the boundaries of the districts of Pathum Wan (on the west), Watthana (to the north) and Khlong Toei (to the south) meet. From there, Sukhumvit Road continues eastwards, forming a border between Wattana and Khlong Toei districts. Then, it continues into Phra Khanong district and then to Bang Na district.
Within Bangkok itself, Sukhumvit Road is a major commercial street. The Sukhumvit Line of the BTS Skytrain follows the road until the final station at On Nut. People going to the eastern provinces can take the bus at the Eastern Bus Terminal, also along Sukhumvit Road. It can be reached by taking the Skytrain to the Ekkamai Station.