There are
994 mi
from New Rochelle, NY to Cahokia, IL
That's the driving distance. It would take 18 hours 41 mins to go from New Rochelle, New York to Cahokia, Illinois.
The flight distance (direct flight from New Rochelle, NY to Cahokia, IL) is 885.21 mi.
994 mi = 1,598.93 kms