There are
1,815 mi
from Arcadia, CA to Cahokia, IL
That's the driving distance. It would take 1 day 7 hours to go from Arcadia, California to Cahokia, Illinois.
The flight distance (direct flight from Arcadia, CA to Cahokia, IL) is 1,573.05 mi.
1,815 mi = 2,920.42 kms