It would be 14 hours and 20 min but if you add traffic.
It is 907 miles according to Google Maps.
The driving distance from DC and Tampa FL is 908 road miles - about 15 hours driving time.
The drive time from Washington, District of Columbia to Tampa, Florida is:14 hours, 25 minutes
It is 425 miles from Tampa to the Florida Keys.
147 miles
The driving distance from Tampa, Florida to Parris Island, South Carolina is 375 miles.
It is 2,841 miles according to Google Maps.
It is 146.95 miles according to MapQuest.
65 miles down I-4.
It is 279.85 miles according to MapQuest.
The Keys are 120 miles long. Tampa to Key West is 425 miles.
The driving distance from New Orleans, Louisiana to Tampa, Florida is 658 miles.