There are
862 mi
from Boynton Beach, FL to Mt Juliet, TN
That's the driving distance. It would take 15 hours 47 mins to go from Boynton Beach, Florida to Mt Juliet, Tennessee.
The flight distance (direct flight from Boynton Beach, FL to Mt Juliet, TN) is 768.75 mi.
862 mi = 1,387.61 kms