It begins in Ratchathewi district at Sam Liam Din Daeng Junction, where it intersects with Din Daeng Road and Ratchaprarop Road, and runs northwest, past Victory Monument Circle, through Dusit district, and ultimately crossing the Chao Phraya River on Krung Thon Bridge and ending in Bang Phlat district at Bang Phlat Intersection, where it intersects with Sirindhorn Road and Charan Sanitwong Road.