Madison, Wisconsin to O'Fallon, Illinois: Road Trip Guide & Distance

How far is Madison, Wisconsin from O'Fallon, Illinois?

The distance from Madison, Wisconsin to O'Fallon, Illinois is 310.7 miles (500.1 km) as the crow flies. O'Fallon, Illinois is located S of Madison, Wisconsin. By car, the driving distance is approximately 372.9 miles, taking about 7h 30min. A direct flight would take roughly 1h 8min. Both are located in United States — Madison, Wisconsin in Wisconsin and O'Fallon, 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.

Coordinates come from public place data for Madison, Wisconsin and O'Fallon, 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.