National Highway 666 (NH 666)
Written and checked byRamanathan Virli· Roads & Infrastructure
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:
Major Cities & Towns Along NH 666
The highway passes through 6 major cities and towns:
NH 666 Start and End Point
Start Point (Origin)
Karwar
End Point (Terminus)
Bankapura
Highway Classification
Speed Limit on NH 666
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
Where does National Highway 666 start and end?
Which states does National Highway 666 pass through?
What are the major cities on National Highway 666?
What is the total length of National Highway 666?
Is National Highway 666 a primary or secondary national highway?
What is the speed limit on National Highway 666?
What is the route of National Highway 666? (Route Map)
Planning a Road Trip on NH 666?
Check out our road safety guides and highway speed limits.
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