There are
1,303 mi
from Layton, UT to Ballwin, MO
That's the driving distance. It would take 22 hours 40 mins to go from Layton, Utah to Ballwin, Missouri.
The flight distance (direct flight from Layton, UT to Ballwin, MO) is 1,146.55 mi.
1,303 mi = 2,097.53 kms