There are
1,794 mi
from Rancho Cucamonga, CA to Cahokia, IL
That's the driving distance. It would take 1 day 7 hours to go from Rancho Cucamonga, California to Cahokia, Illinois.
The flight distance (direct flight from Rancho Cucamonga, CA to Cahokia, IL) is 1,549.97 mi.
1,794 mi = 1.61 kms