Miles between Decatur, IL and Prospect Heights, IL

There are
192 mi
from Decatur, IL to Prospect Heights, IL

That's the driving distance. It would take 3 hours 49 mins to go from Decatur, Illinois to Prospect Heights, Illinois.

The flight distance (direct flight from Decatur, IL to Prospect Heights, IL) is 164.59 mi.

192 mi = 309.03 kms