There are
1,828 mi
from Temecula, CA to Cahokia, IL
That's the driving distance. It would take 1 day 7 hours to go from Temecula, California to Cahokia, Illinois.
The flight distance (direct flight from Temecula, CA to Cahokia, IL) is 1,540.58 mi.
1,828 mi = 1.61 kms