🛣️West India to South IndiaPrimary Highway

National Highway 66 (NH 66)

Navi Mumbai to Kanyakumari — 1640.0 km

NH 66 is a primary national highway connecting Navi Mumbai to Kanyakumari, spanning 1640.0 km through Goa, Karnataka, Kerala, Maharashtra, Tamil Nadu.

1640.0

Kilometres

States

Major Cities

NH 66

Parent Highway

NH 66 Route Map

(NH17) NH48 near Panvel, Indapur, Mahad, Rajapur, Kudal, Panaji, Margao, Karwar, Honavar, Udupi, Mangalore, Kasaragod, Kannur, Kozhikode, Ponnani, Guruvayoor, NH544 near Edappalli, (NH47) Ernakulam, Alappuzha, Kollam, Attingal, Thiruvananthapuram, NH44 near Kanyakumari

States & Union Territories

NH 66 passes through the following 5 states:

GoaKarnatakaKeralaMaharashtraTamil Nadu

Major Cities & Towns Along NH 66

The highway passes through 15 major cities and towns:

●Panvel→●Indapur→●Mahad→●Rajapur→●Kudal→●Panaji→●Margao→●Karwar→●Honavar→●Udupi→●Mangalore→●Kasaragod→●Kannur→●Kozhikode→●Ponnani

View on Google Maps

NH 66 Start and End Point

Start Point (Origin)

Navi Mumbai

End Point (Terminus)

Kanyakumari

Highway Classification

Highway NumberNH 66

TypePrimary National Highway

Total Length1640.0 km

RegionWest India to South India

Numbering SystemPost-2010 (New)

Managed ByNHAI / MoRTH

Speed Limit on NH 66

Cars, Jeeps & Light Motor Vehicles100 km/h

Buses & Goods Carriers (medium)80 km/h

Heavy Motor Vehicles (trucks, lorries)60 km/h

Motorcycles & Two-Wheelers80 km/h

Speed limits are prescribed under the Motor Vehicles Act and Central Motor Vehicles Rules for national highways. State governments may impose lower limits on specific stretches.

Safety Tips for Driving on NH 66

⚠️Always follow the speed limit — 100 km/h for cars and 80 km/h for heavy vehicles on national highways.
⚠️Wear seatbelts and ensure all passengers are buckled up.
⚠️Do not overtake on curves, bridges, or narrow sections.
⚠️Keep a safe following distance, especially during monsoon season.
⚠️Use headlights even during daytime on highways.
⚠️Take breaks every 2 hours during long drives to avoid fatigue.
⚠️In case of an emergency, call 112 (Unified Emergency Number) or 1033 (National Highway Helpline).

Frequently Asked Questions

Where does National Highway 66 start and end?

National Highway 66 starts from Navi Mumbai and ends at Kanyakumari, covering a total distance of 1640.0 km.

Which states does National Highway 66 pass through?

National Highway 66 passes through Goa, Karnataka, Kerala, Maharashtra, Tamil Nadu.

What are the major cities on National Highway 66?

The major cities and towns along National Highway 66 include Panvel, Indapur, Mahad, Rajapur, Kudal, Panaji, Margao, Karwar, Honavar, Udupi, Mangalore, Kasaragod, Kannur, Kozhikode, Ponnani.

What is the total length of National Highway 66?

The total length of National Highway 66 is 1640.0 km.

Is National Highway 66 a primary or secondary national highway?

National Highway 66 is a primary national highway in India's post-2010 numbering system.

What is the speed limit on National Highway 66?

The speed limit on National Highway 66 is 100 km/h for cars and light motor vehicles, 80 km/h for buses and medium goods vehicles, and 60 km/h for heavy motor vehicles (trucks and lorries). These limits are set under the Central Motor Vehicles Rules for national highways. State governments may impose lower limits on specific sections.

What is the route of National Highway 66? (Route Map)

National Highway 66 follows this route: (NH17) NH48 near Panvel, Indapur, Mahad, Rajapur, Kudal, Panaji, Margao, Karwar, Honavar, Udupi, Mangalore, Kasaragod, Kannur, Kozhikode, Ponnani, Guruvayoor, NH544 near Edappalli, (NH47) Ernakulam, Alappuzha, Kollam, Attingal, Thiruvananthapuram, NH44 near Kanyakumari — starting at Navi Mumbai and ending at Kanyakumari.

Planning a Road Trip on NH 66?

Check out our road safety guides and highway speed limits.

Road Safety Rules Highway Speed Limits Road Trip Checklist