Chicago to Louisville distance

Chicago to Louisville by road

The fastest driving route is 294 miles (473 km) long and takes about 5 hr 40 min without stops or traffic. It runs mostly on I-65 (262 mi) and I-90 (26.8 mi).

It goes through 2 states: Illinois (14.1 mi) and Indiana (278 mi). That’s an average of 52 mph (84 km/h). AAA recommends a break every two hours or 100 miles: with 2 stops of 20 minutes, the trip takes about 6 hr 20 min. The time is OSRM’s estimate with OpenStreetMap data: no traffic and speeds somewhat below the limits, so real trips can differ.

Straight-line distance and bearing

In a straight line, the shortest distance over the Earth’s surface, Chicago and Louisville are 268 miles (431 km) apart. That’s the geodesic on the WGS84 ellipsoid, the distance “as the crow flies”.

The road is 10% longer: for every 100 miles in a straight line you drive 110. The route runs almost straight. Of the 110 US driving pairs in this series, it ranks 81st for detour (the average is 16%).

From Chicago, Louisville lies to the southeast (bearing 157°), and from Louisville, Chicago lies to the north.

Halfway between Chicago and Louisville

Halfway along the straight line, 134 miles (215 km) from each city, is the point 40.0563° N, 86.6799° W. It falls near Advance (Indiana, pop. 500), 5.3 mi away.

By road, the halfway point is 147 miles (237 km) from each city, near Ulen (Indiana, pop. 112), 4.4 mi away. The two midpoints are 9.7 mi apart: if you want to meet halfway, the one on the road is the useful one.

Time difference and flight

Louisville is 1 hour ahead of Chicago all year (Eastern Time versus Central Time): when it’s 12:00 in Chicago, it’s 13:00 in Louisville.

No flight time is given: under 500 km (311 miles) in a straight line, time at the airport outweighs time in the air.

The two cities

Chicago sits at 588 ft (179 m) and Louisville at 461 ft (141 m), 127 ft (39 m) lower.

Chicago has 2.7 million people and Louisville 641,962 people (Census Bureau estimate for 2025).