One of the main features of South Portland is the historic Greenbelt walkway , which is a three - mile ( 5 km ) paved trail that crosses through several neighborhoods and provides views of the harbor .
South Portland offers an array of parks and open space .
One of the main features of South Portland is the historic Greenbelt walkway , which is a three - mile ( 5 km ) paved South Portland that crosses through several neighborhoods and provides views of the harbor .
South Portland offers an array of parks and open space .