1. National Highway 7: Varanasi to kanyakumari.
longest highway of India.
length 2369 km.
root: Varanasi->jabalpur->Nagpur->Hyderabad->Bangalore
->Madurai-> kanyakumari.
2. National Highway 6: hazira(Surat, Gujarat) to Kolkata
length 1949 Km
root: Surat -> Dhule -> Nagpur -> samhalpur -> Kolkata
3. National Highway 5: Katak to Chennai
length 1533 km
4. National Highway 15: Pathankot to samkhiali(Gujarat)
length 1526 Km
root: Pathankot -> Amritsar -> Bhatinda -> Bikaner -> Jesalmer-> Kutchh -> Samakhiali.
5. National Highway 2: Delhi to Kolkata
length 1465 Km
it is a part of the grand trunk road
root: Faridabad -> Mathura -> Agra -> Allahabad
-> varansi -> mugalsarai -> Aurangabad -> Dhanbad
6. National Highway 8: Mumbai to Delhi
length 1490 Km
root: Delhi -> Gurgoun -> Jaipur -> udaipur -> Gandhinagar -> Ahemdabad -> Vadodra -> Surat ->Silvasa -> Mumbai
7. National Highway 17: Panvel to Kochi
length 1269 Km
commonly referred to as NH 66 (previously known as NH 17), is a busy National Highway in India that runs roughly north–south
root: Panvel -> panji -> ankol -> Manglore -> Kozhikode
->Kochi
The Shortest National Highway NH47A.it length is 6 Km and situated in kerala.
The highest altitude NH is NH 1A, From Amritsar to Leh.
