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🛣️Secondary Highway

National Highway 666 (NH 666)

Karwar to Bankapura — 175.0 km

NH 666 is a secondary/branch national highway connecting Karwar to Bankapura, spanning 175.0 km through Karnataka. It branches from NH 66.

175.0

Kilometres

1

State

6

Major Cities

NH 66

Parent Highway

NH 666 Route Map

NH66 near Karwar, Kaliwadi, Mallapur, Yellapur, Mundgod, NH48 near Bankapura

States & Union Territories

NH 666 passes through the following 1 state:

Karnataka

Major Cities & Towns Along NH 666

The highway passes through 6 major cities and towns:

●Karwar→●Kaliwadi→●Mallapur→●Yellapur→●Mundgod→●Bankapura
View on Google Maps

NH 666 Start and End Point

Start Point (Origin)

Karwar

Junction point from route description

End Point (Terminus)

Bankapura

Junction point from route description

Highway Classification

Highway NumberNH 666
TypeSecondary/Branch Highway
Parent HighwayNH 66
Total Length175.0 km
Numbering SystemPost-2010 (New)
Managed ByNHAI / MoRTH

Speed Limit on NH 666

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 666

  • ⚠️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

Which states does National Highway 666 pass through?
National Highway 666 passes through Karnataka.
What are the major cities on National Highway 666?
The major cities and towns along National Highway 666 include Karwar, Kaliwadi, Mallapur, Yellapur, Mundgod, Bankapura.
What is the total length of National Highway 666?
The total length of National Highway 666 is 175.0 km.
Is National Highway 666 a primary or secondary national highway?
National Highway 666 is a secondary/branch national highway that branches from NH 66.
What is the speed limit on National Highway 666?
The speed limit on National Highway 666 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 666? (Route Map)
National Highway 666 follows this route: NH66 near Karwar, Kaliwadi, Mallapur, Yellapur, Mundgod, NH48 near Bankapura.

Planning a Road Trip on NH 666?

Check out our road safety guides and highway speed limits.

Road Safety RulesHighway Speed LimitsRoad Trip Checklist

Related National Highways

NH 66

Navi Mumbai → Kanyakumari

1640.0 km
West India to South India

NH 166

149.0 km

NH 166A

NH 166D

26.4 km

NH 166E

NH 166F

28.3 km

Other National Highways in Karnataka

NH 42

Joladarasi → Krishnagiri

NH 44

Srinagar → Kanyakumari

NH 48

Delhi → Chennai

NH 50

Nanded → Chitradurga

NH 52

Sangrur → Ankola

NH 65

Pune → Machilipatnam

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