There are
1,991 mi
from Elk Grove, CA to Cahokia, IL
That's the driving distance. It would take 1 day 10 hours to go from Elk Grove, California to Cahokia, Illinois.
The flight distance (direct flight from Elk Grove, CA to Cahokia, IL) is 1,678.17 mi.
1,991 mi = 1.61 kms