There are
1,606 mi
from St George, UT to Crest Hill, IL
That's the driving distance. It would take 1 day 3 hours to go from St George, Utah to Crest Hill, Illinois.
The flight distance (direct flight from St George, UT to Crest Hill, IL) is 1,390.78 mi.
1,606 mi = 1.61 kms