Miles between Rockford, IL and Duncan, OK

There are
871 mi
from Rockford, IL to Duncan, OK

That's the driving distance. It would take 15 hours 50 mins to go from Rockford, Illinois to Duncan, Oklahoma.

The flight distance (direct flight from Rockford, IL to Duncan, OK) is 719.29 mi.

871 mi = 1,402.49 kms