There are
1,579 mi
from St George, UT to Cape Girardeau, MO
That's the driving distance. It would take 1 day 3 hours to go from St George, Utah to Cape Girardeau, Missouri.
The flight distance (direct flight from St George, UT to Cape Girardeau, MO) is 1,320.60 mi.
1,579 mi = 1.61 kms