There are
1,842 mi
from Gardena, CA to Cahokia, IL
That's the driving distance. It would take 1 day 8 hours to go from Gardena, California to Cahokia, Illinois.
The flight distance (direct flight from Gardena, CA to Cahokia, IL) is 1,593.66 mi.
1,842 mi = 2,964.36 kms