There are
938 mi
from Lawton, OK to Maryville, TN
That's the driving distance. It would take 16 hours 37 mins to go from Lawton, Oklahoma to Maryville, Tennessee.
The flight distance (direct flight from Lawton, OK to Maryville, TN) is 817.78 mi.
938 mi = 1,509.54 kms