Portadown is located in Belfast city, United Kingdom at the 54.423, -6.4443 coordinates. Distance from Portadown to other cities. are listed below, click on the city name to find distance between. Distance from Portadown to Londonderry County Borough 85 km, to Derry 85 km, to Lisburn 29 km. The green marker indicates the location of Portadown.