There are
1,806 mi
from Hemet, CA to Cahokia, IL
That's the driving distance. It would take 1 day 7 hours to go from Hemet, California to Cahokia, Illinois.
The flight distance (direct flight from Hemet, CA to Cahokia, IL) is 1,524.93 mi.
1,806 mi = 1.61 kms