There are
672 mi
from Garland, TX to Mt Juliet, TN
That's the driving distance. It would take 11 hours 56 mins to go from Garland, Texas to Mt Juliet, Tennessee.
The flight distance (direct flight from Garland, TX to Mt Juliet, TN) is 618.65 mi.
672 mi = 1,081.27 kms