There are
1,967 mi
from Rockford, IL to Calexico, CA
That's the driving distance. It would take 1 day 11 hours to go from Rockford, Illinois to Calexico, California.
The flight distance (direct flight from Rockford, IL to Calexico, CA) is 1,583.72 mi.
1,967 mi = 1.61 kms