There are
1,146 mi
from Boynton Beach, FL to Festus, MO
That's the driving distance. It would take 21 hours 19 mins to go from Boynton Beach, Florida to Festus, Missouri.
The flight distance (direct flight from Boynton Beach, FL to Festus, MO) is 1,006.60 mi.
1,146 mi = 1.61 kms