There are 10.36 miles from Dover to Portsmouth in southeast direction and 12 miles (19.31 kilometers) by car, following the NH 16 S route.
Dover and Portsmouth are 19 minutes far apart, if you drive non-stop .
This is the fastest route from Dover, NH to Portsmouth, NH. The halfway point is Newington, NH.
Dover, NH and Portsmouth, NH are in the same time zone (EDT). Current time in both locations is 2:12 am.
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