There are
1,832 mi
from Tustin, CA to Cahokia, IL
That's the driving distance. It would take 1 day 8 hours to go from Tustin, California to Cahokia, Illinois.
The flight distance (direct flight from Tustin, CA to Cahokia, IL) is 1,570.99 mi.
1,832 mi = 1.61 kms