How many miles from Limavady to Londonderry Northern Ireland?
About 16 miles or 26 kilometres.
93 miles taking this route: Take M2 to The NORTH, form Belfast, to M22 LONDONDERRY; continue straight on M22. Take M22 to A6 LONDONDERRY. Take A6 to the road that leads to the FOYLE BRIDGE (at ALTNAGEVIN ROUNDABOUT) in Londonderry. Take the Londonderry by-pass around to A2 LETTERKENNY, via the Foyle Bridge. Then take A2 into IRELAND, where the highway continues as N13. Continue on N13 to Letterkenny, via N14.
What you are referring to is the Republic of Ireland. The term southern Ireland is often used for it purely to distinguish it from Northern Ireland, although in fact the most northerly point of the island of Ireland is in the Republic of Ireland and not Northern Ireland. The Republic of Ireland is about 70,273 square kilometres or 27,133 square miles.