There are
1,636 mi
from Meridian, ID to Cahokia, IL
That's the driving distance. It would take 1 day 3 hours to go from Meridian, Idaho to Cahokia, Illinois.
The flight distance (direct flight from Meridian, ID to Cahokia, IL) is 1,401.73 mi.
1,636 mi = 1.61 kms