High Quality Content by WIKIPEDIA articles! National Highway 61 (NH 61) is a National Highway of India. It runs from Kohima, the capital of the state of Nagaland and ends at Jhanji in the state of Assam. The highway is 240 km (150 mi) long, of which 220 km (140 mi) is in Nagaland and 20 km (12 mi) is in Assam.