There are
794 mi
from Hereford, TX to Kennett, MO
That's the driving distance. It would take 13 hours 58 mins to go from Hereford, Texas to Kennett, Missouri.
The flight distance (direct flight from Hereford, TX to Kennett, MO) is 700.45 mi.
794 mi = 1,278.27 kms