There are
1,790 mi
from Rialto, CA to Cahokia, IL
That's the driving distance. It would take 1 day 7 hours to go from Rialto, California to Cahokia, Illinois.
The flight distance (direct flight from Rialto, CA to Cahokia, IL) is 1,537.94 mi.
1,790 mi = 1.61 kms