Distance from Chennai to Patna

The straight-line (great-circle) distance between Chennai and Patna is 1,483.1 kilometres, roughly 2 h 15 min by plane at 850 km/h. By road it is about 1,890 km via NH16 and NH26, which takes around 23 h 15 min of driving without stops. The map below shows both routes, and the calculator recomputes them for any other pair of places.

Straight line1,483.1 km
By road1,890 km
Driving time23 h 15 min
Flight time2 h 15 min

About this page

This page is for travellers planning a trip from Chennai, Tamil Nadu to Patna, Bihar. The straight-line distance comes from the haversine formula (great-circle distance). The road distance and driving time are the fastest car route on the OpenStreetMap road network, computed with OSRM; the actual time depends on traffic, stops and the highways you choose. Chennai sits in Tamil Nadu and Patna in Bihar, so the road route can pass through several states. Tap "Calculate distance" in the calculator to redraw the route live.

Frequently asked questions

What is the distance from Chennai to Patna?
In a straight line it is 1,483.1 km. By road it is about 1,890 km, roughly 23 h 15 min of driving.
How long does it take to fly from Chennai to Patna?
Roughly 2 h 15 min: the distance at a cruising speed of 850 km/h plus about 30 minutes for take-off and landing.
How long is the road route between Chennai and Patna?
About 1,890 km on the fastest route via NH16 and NH26, which takes around 23 h 15 min by car. Tap "Calculate distance" in the calculator to see the route on the map.
Are Chennai and Patna in the same state?
No — Chennai is in Tamil Nadu and Patna in Bihar.
How is the distance computed?
The straight-line distance uses the haversine (great-circle) formula, which gives the shortest distance between two points on Earth's spherical surface.