There are
889 mi
from Rockford, IL to Keansburg, NJ
That's the driving distance. It would take 16 hours 55 mins to go from Rockford, Illinois to Keansburg, New Jersey.
The flight distance (direct flight from Rockford, IL to Keansburg, NJ) is 785.24 mi.
889 mi = 1,429.90 kms