There are
672 mi
from Fort Smith, AR to Lawrenceburg, KY
That's the driving distance. It would take 12 hours 16 mins to go from Fort Smith, Arkansas to Lawrenceburg, Kentucky.
The flight distance (direct flight from Fort Smith, AR to Lawrenceburg, KY) is 556.95 mi.
672 mi = 1,080.83 kms