There are
1,868 mi
from Thousand Oaks, CA to Cahokia, IL
That's the driving distance. It would take 1 day 8 hours to go from Thousand Oaks, California to Cahokia, Illinois.
The flight distance (direct flight from Thousand Oaks, CA to Cahokia, IL) is 1,615.69 mi.
1,868 mi = 1.61 kms