NH 44
NH 44 covers the North-South Corridor of NHDP and it is officially listed as running over 3,745 km (2,327 mi) from Srinagar to Kanyakumari. It is the longest national highway in India.
NH 47A
[1] The shortest National Highway was the NH 47A (5.9 km (3.7 mi)), which connected Kundanoor Junction of Maradu in Kochi city to the Kochi port at Willingdon Island. India has the distinction of having the world's highest drivable highway connecting Manali to Leh in Ladakh, Kashmir.