There are
1,829 mi
from Whittier, CA to Cahokia, IL
That's the driving distance. It would take 1 day 8 hours to go from Whittier, California to Cahokia, Illinois.
The flight distance (direct flight from Whittier, CA to Cahokia, IL) is 1,576.64 mi.
1,829 mi = 1.61 kms