Distance from Chicago to O'Fallon

The distance from Chicago to O'Fallon is approximately 426 km / 265 mi (as the crow flies).

The following map shows the distance from Chicago to O'Fallon.

For more detailed information about any of the places please click on the place name:
• Chicago
• O'Fallon

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Current distance: Chicago -> O'Fallon
Show reverse: O'Fallon -> Chicago

DistanceRouteRoute by bikeRoute by foot