Chattanooga to Decatur, Illinois: Road Trip Guide & Distance

How far is Chattanooga from Decatur, Illinois?

The distance from Chattanooga to Decatur, Illinois is 386.9 miles (622.6 km) as the crow flies. Decatur, Illinois is located NNW of Chattanooga. By car, the driving distance is approximately 464.2 miles, taking about 9h 20min. A direct flight would take roughly 1h 17min. Both are located in United States — Chattanooga in Tennessee and Decatur, Illinois in Illinois.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare.

Coordinates come from public place data for Chattanooga and Decatur, Illinois. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.