There are
1,846 mi
from Carlsbad, CA to Cahokia, IL
That's the driving distance. It would take 1 day 8 hours to go from Carlsbad, California to Cahokia, Illinois.
The flight distance (direct flight from Carlsbad, CA to Cahokia, IL) is 1,559.91 mi.
1,846 mi = 2,970.49 kms