National Highway 39 starts at Numaligarh in Assam and runs across the states of Nagaland and Manipur, up to the Indo-Burmese international border, covering a combined length of 436 km.
On its way, the road passes through Golaghat, Barpathar, Dimapur, Kohima, Mao, Imphal, Thoubal and Palel before terminating at the border town of Moreh.
Of its total length, 115 km is in Assam, 110 km in Nagaland and the rest 211 km in Manipur.