There are
1,964 mi
from Clovis, CA to Cahokia, IL
That's the driving distance. It would take 1 day 10 hours to go from Clovis, California to Cahokia, Illinois.
The flight distance (direct flight from Clovis, CA to Cahokia, IL) is 1,611.03 mi.
1,964 mi = 1.61 kms