Merrillville to St. Louis: Road Trip Guide & Distance

How far is Merrillville from St. Louis?

The distance from Merrillville to St. Louis is 248.8 miles (400.4 km) as the crow flies. St. Louis is located SW of Merrillville. By car, the driving distance is approximately 311 miles, taking about 6h 15min. A direct flight would take roughly 1h 0min. Both are located in United States — Merrillville in Indiana and St. Louis 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 Merrillville 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.