There are 175.68 miles from New Castle to Rockville in southwest direction and 211 miles (339.57 kilometers) by car, following the I-395 S route.
New Castle and Rockville are 3 hours 40 mins far apart, if you drive non-stop .
This is the fastest route from New Castle, DE to Rockville, VA. The halfway point is Colmar Manor, MD.
New Castle, DE and Rockville, VA are in the same time zone (EDT). Current time in both locations is 10:24 pm.
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