There are
1,044 mi
from Bismarck, ND to Cahokia, IL
That's the driving distance. It would take 18 hours 5 mins to go from Bismarck, North Dakota to Cahokia, Illinois.
The flight distance (direct flight from Bismarck, ND to Cahokia, IL) is 781.82 mi.
1,044 mi = 1,680.02 kms