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

How far is O'Fallon, Illinois from Seymour?

The distance from O'Fallon, Illinois to Seymour is 218 miles (350.9 km) as the crow flies. Seymour is located E of O'Fallon, Illinois. By car, the driving distance is approximately 272.5 miles, taking about 5h 29min. A direct flight would take roughly 56min. Both are located in United States — O'Fallon, Illinois in Illinois and Seymour in Indiana.

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. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility.

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