Top 10 Longest National Highways in India

National Highway	Distance (Km)	Route
NH 44 (old NH 7)	3745	Sri Nagar to Kanyakumari
NH 27	3507	Porbandar in Gujrat to Silchart in Assam
NH 48 (old NH 8)	2807	Delhi to Chennai
NH 52	2317	Sangrur, Punjab to Ankola, Karnataka
NH 30 (old NH 221)	2040	Sitarganj in Uttarakhand to Lbrahimpatnam in Andhra Pradesh
NH 6	1873	Jarabat in Meghalaya and terminates at Selling on Mizoram
NH 53	1781	Hajira in Gujrat and Pradip part in Odisha
NH 16 (old NH 5)	1711	East coast of West Bengal to Chennai in Tamil Nadu
NH 66 (old NH 17)	1622	Panvel and terminates at Kanyakumari
NH 19	1435	Delhi to Kolkata