There are
1,604 mi
from Las Vegas, NV to Cahokia, IL
That's the driving distance. It would take 1 day 3 hours to go from Las Vegas, Nevada to Cahokia, Illinois.
The flight distance (direct flight from Las Vegas, NV to Cahokia, IL) is 1,379.57 mi.
1,604 mi = 1.61 kms