Miles between Decatur, IL and Spencer, IA

There are
510 mi
from Decatur, IL to Spencer, IA

That's the driving distance. It would take 9 hours 53 mins to go from Decatur, Illinois to Spencer, Iowa.

The flight distance (direct flight from Decatur, IL to Spencer, IA) is 393.21 mi.

510 mi = 821.46 kms