There are
178 mi
from Rockford, IL to Kaukauna, WI
That's the driving distance. It would take 3 hours 44 mins to go from Rockford, Illinois to Kaukauna, Wisconsin.
The flight distance (direct flight from Rockford, IL to Kaukauna, WI) is 144.70 mi.
178 mi = 286.66 kms