There are
2,255 mi
from Layton, UT to St Augustine, FL
That's the driving distance. It would take 1 day 16 hours to go from Layton, Utah to St Augustine, Florida.
The flight distance (direct flight from Layton, UT to St Augustine, FL) is 1,876.86 mi.
2,255 mi = 3,629.40 kms