Ballwin to Mammoth Cave: Road Trip Guide & Distance

How far is Ballwin from Mammoth Cave?

The distance from Ballwin to Mammoth Cave is 261.2 miles (420.3 km) as the crow flies. Mammoth Cave is located ESE of Ballwin. By car, the driving distance is approximately 326.5 miles, taking about 6h 34min. A direct flight would take roughly 1h 2min. Both are located in United States — Ballwin in Missouri and Mammoth Cave in Kentucky.

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 Ballwin and Mammoth Cave. 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.