There are
1,017 mi
from Boynton Beach, FL to Rockville, MD
That's the driving distance. It would take 18 hours 37 mins to go from Boynton Beach, Florida to Rockville, Maryland.
The flight distance (direct flight from Boynton Beach, FL to Rockville, MD) is 883.92 mi.
1,017 mi = 1.61 kms