Marion, Iowa to Saint Peters, Missouri: Road Trip Guide & Distance

How far is Marion, Iowa from Saint Peters, Missouri?

The distance from Marion, Iowa to Saint Peters, Missouri is 229.2 miles (368.9 km) as the crow flies. Saint Peters, Missouri is located SSE of Marion, Iowa. By car, the driving distance is approximately 286.5 miles, taking about 5h 46min. A direct flight would take roughly 58min. Both are located in United States — Marion, Iowa in Iowa and Saint Peters, 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. 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 Marion, Iowa and Saint Peters, 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.