There are
186 mi
from Decatur, IL to Bettendorf, IA
That's the driving distance. It would take 3 hours 34 mins to go from Decatur, Illinois to Bettendorf, Iowa.
The flight distance (direct flight from Decatur, IL to Bettendorf, IA) is 143.30 mi.
186 mi = 298.53 kms