There are
2,041 mi
from Simi Valley, CA to Calumet City, IL
That's the driving distance. It would take 1 day 12 hours to go from Simi Valley, California to Calumet City, Illinois.
The flight distance (direct flight from Simi Valley, CA to Calumet City, IL) is 1,765.94 mi.
2,041 mi = 3.22 kms