By road, aprox 240 miles
From Portsmouth RI its 374 miles From Portsmouth NH its 433 miles
20 miles taking M27 PORTSMOUTH.
Answer By road, the distance from Portsmouth to Glasgow in Scotland is about 450 miles.
446 miles
448 miles
73.7 miles
About 600
The distance between Portsmouth and Brighton is about 47 miles.
74 miles
106 miles
70 miles taking A3.
240 miles