There are 11.20 miles from Rockville to Adelphi in southeast direction and 15.58 miles (25.07 kilometers) by car, following the I-495 route.
Rockville and Adelphi are 18 minutes far apart, if you drive non-stop.
This is the fastest route from Rockville, MD to Adelphi, MD. The halfway point is .
Rockville, MD and Adelphi, MD are in the same time zone (EDT). Current time in both locations is 6:39 am.
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