There are
1,022 mi
from Boynton Beach, FL to Gaithersburg, MD
That's the driving distance. It would take 18 hours 45 mins to go from Boynton Beach, Florida to Gaithersburg, Maryland.
The flight distance (direct flight from Boynton Beach, FL to Gaithersburg, MD) is 887.41 mi.
1,022 mi = 1.61 kms