Decatur, Illinois to Lee's Summit: Road Trip Guide & Distance

How far is Decatur, Illinois from Lee's Summit?

The distance from Decatur, Illinois to Lee's Summit is 296.8 miles (477.7 km) as the crow flies. Lee's Summit is located W of Decatur, Illinois. By car, the driving distance is approximately 371 miles, taking about 7h 28min. A direct flight would take roughly 1h 6min. Both are located in United States — Decatur, Illinois in Illinois and Lee's Summit in Missouri.

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. 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 Decatur, Illinois and Lee's Summit. 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.