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

How far is Arnold from O'Fallon, Illinois?

The distance from Arnold to O'Fallon, Illinois is 27.5 miles (44.3 km) as the crow flies. O'Fallon, Illinois is located ENE of Arnold. By car, the driving distance is approximately 35.8 miles, taking about 43min. A direct flight would take roughly 33min. Both are located in United States — Arnold in Missouri and O'Fallon, Illinois in Illinois.

This is a very short trip, perfect for a quick morning drive or an easy commute. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. 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 Arnold 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.