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

How far is O'Fallon, Illinois from Washington, Illinois?

The distance from O'Fallon, Illinois to Washington, Illinois is 148.3 miles (238.7 km) as the crow flies. Washington, Illinois is located N of O'Fallon, Illinois. By car, the driving distance is approximately 185.4 miles, taking about 3h 44min. A direct flight would take roughly 48min. Both are located in United States.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. Given the short distance, driving or taking a train is often faster and more convenient than dealing with airport security and flight boarding times.

Coordinates come from public place data for O'Fallon, Illinois and Washington, 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.