Mason City to St. Louis: Road Trip Guide & Distance

How far is Mason City from St. Louis?

The distance from Mason City to St. Louis is 349.8 miles (562.9 km) as the crow flies. St. Louis is located SSE of Mason City. By car, the driving distance is approximately 419.7 miles, taking about 8h 27min. A direct flight would take roughly 1h 12min. Both are located in United States — Mason City in Iowa and St. Louis in Missouri.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. 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 Mason City and St. Louis. 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.