There are
966 mi
from Rockford, IL to Thibodaux, LA
That's the driving distance. It would take 18 hours 1 min to go from Rockford, Illinois to Thibodaux, Louisiana.
The flight distance (direct flight from Rockford, IL to Thibodaux, LA) is 867.30 mi.
966 mi = 1,554.75 kms