It then crosses the border between Bangkok and Samut Prakan Province and subsequently continues east through Chachoengsao Province, south through Chonburi Province skirting the Khao Khiao Massif, east through Rayong Province, south-east through Chanthaburi Province, and ends at Ban Hat Lek village in Trat Province.
In Chonburi Province it passes through the towns of Chonburi, Laem Chabang, Bang Lamung township, Si Racha, and Pattaya.