There are
678 mi
from Gainesville, FL to Dyersburg, TN
That's the driving distance. It would take 13 hours 43 mins to go from Gainesville, Florida to Dyersburg, Tennessee.
The flight distance (direct flight from Gainesville, FL to Dyersburg, TN) is 601.70 mi.
678 mi = 1,091.02 kms