There are
849 mi
from Gainesville, FL to Havre De Grace, MD
That's the driving distance. It would take 16 hours 8 mins to go from Gainesville, Florida to Havre De Grace, Maryland.
The flight distance (direct flight from Gainesville, FL to Havre De Grace, MD) is 769.77 mi.
849 mi = 1,365.56 kms