Fort Smith to Mammoth Cave: Road Trip Guide & Distance

How far is Fort Smith from Mammoth Cave?

The distance from Fort Smith to Mammoth Cave is 478.4 miles (769.9 km) as the crow flies. Mammoth Cave is located ENE of Fort Smith. By car, the driving distance is approximately 574.1 miles, taking about 11h 33min. A direct flight would take roughly 1h 28min. Both are located in United States — Fort Smith in Arkansas and Mammoth Cave in Kentucky.

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 Fort Smith 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.