There are
856 mi
from Deerfield Beach, FL to Smyrna, TN
That's the driving distance. It would take 15 hours 42 mins to go from Deerfield Beach, Florida to Smyrna, Tennessee.
The flight distance (direct flight from Deerfield Beach, FL to Smyrna, TN) is 767.58 mi.
856 mi = 1,377.11 kms