Are you asking about Washington, DC or Washington state.
About 13 hours of driving time.
The driving distance between Louisville, KY and Washington, DC is approximately 580 miles. The driving time would be approximately 10 hours if you were to travel non-stop in good driving conditions. (The driving time does not take into consideration conditions which may extend trip time such as weather, road work and rush hour traffic in urban areas.)
35 minutes
The driving distance from Hartford to Washington DC is 341miles per Map Quest. The driving time per Map Quest is 6 hours.
Google Maps estimates the driving time as 12 hours and 33 minutes.
Nearly 11 hours
7 hours.
The distance between these two places is 607 miles. This distance is only approximate. This is not exact distance.
Google Maps estimates the driving time as 2 hours and 46 minutes.
MapQuest gives the estimated driving time as 16 hours and 22 minutes.
Google Maps estimates the driving time as 13 hours and 10 minutes.