Janesville to O'Fallon, Missouri: Road Trip Guide & Distance

How far is Janesville from O'Fallon, Missouri?

The distance from Janesville to O'Fallon, Missouri is 281.6 miles (453.2 km) as the crow flies. O'Fallon, Missouri is located SSW of Janesville. By car, the driving distance is approximately 352 miles, taking about 7h 5min. A direct flight would take roughly 1h 4min. Both are located in United States — Janesville in Wisconsin and O'Fallon, Missouri in Missouri.

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. 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 Janesville and O'Fallon, Missouri. 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.