N54 road
... that a 3.5-kilometre (2.2 mi) section of the N54 road in the Republic of Ireland cannot be reached without first travelling through Northern Ireland?
... that a 3.5-kilometre (2.2<span id="mwA4k" typeof="mw:Entity"> </span>mi) section of the <b id="mwA4o"><a href="./N54_road_(Ireland)" id="mwA4s" rel="mw:WikiLink" title="N54 road (Ireland)">N54 road</a></b> in the Republic of Ireland cannot be reached without first travelling through <a href="./Northern_Ireland" id="mwA4w" rel="mw:WikiLink" title="Northern Ireland">Northern Ireland</a>?