Miles between Richardson, TX and Cahokia, IL

There are
621 mi
from Richardson, TX to Cahokia, IL

That's the driving distance. It would take 11 hours 35 mins to go from Richardson, Texas to Cahokia, Illinois.

The flight distance (direct flight from Richardson, TX to Cahokia, IL) is 533.89 mi.

621 mi = 999.40 kms