St. Louis to Troy, Ohio: Road Trip Guide & Distance

How far is St. Louis from Troy, Ohio?

The distance from St. Louis to Troy, Ohio is 334.9 miles (539 km) as the crow flies. Troy, Ohio is located ENE of St. Louis. By car, the driving distance is approximately 401.9 miles, taking about 8h 5min. A direct flight would take roughly 1h 10min. Both are located in United States — St. Louis in Missouri and Troy, Ohio in Ohio.

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 St. Louis and Troy, Ohio. 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.