Mammoth Cave to Poplar Bluff: Road Trip Guide & Distance

How far is Mammoth Cave from Poplar Bluff?

The distance from Mammoth Cave to Poplar Bluff is 238.8 miles (384.3 km) as the crow flies. Poplar Bluff is located W of Mammoth Cave. By car, the driving distance is approximately 298.5 miles, taking about 6h 0min. A direct flight would take roughly 59min. Both are located in United States — Mammoth Cave in Kentucky and Poplar Bluff 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 Mammoth Cave and Poplar Bluff. 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.