Buses heading to Hanoi's Long Bien bus station depart regularly from the long-distance bus station ( Le Loi street). A daily bus leaves Lang Son for Cao Bang at 5am. Minibuses heading to Cao Bang via That Khe and Dong Khe leave regularly from the minibus station (Tran Dang Ninh street).
Three daily trains run between Lang Son and Hanoi at 2.20am, 6.40am and 2.10pm.
