There are
1,856 mi
from Rockford, IL to Barstow, CA
That's the driving distance. It would take 1 day 8 hours to go from Rockford, Illinois to Barstow, California.
The flight distance (direct flight from Rockford, IL to Barstow, CA) is 1,583.43 mi.
1,856 mi = 1.61 kms