N13

The route diverges from the N15 (from Sligo) at Stranorlar. The route north through Kilross includes a T Junction with the R236 and then runs via Drumnacross to the Dry Arch Bridge located east of Letterkenny with a roundabout. The N14 runs along the Port Road to Letterkenny town centre. A section of dual carriageway runs east to bring the N13 (and traffic from the N14) to Corkey, where the N14 recommences southeastwards linking Lifford from the roundabout with the N13. The N13 continues near Lough Swilly passing Manorcunningham northeast as single carriageway, passing along a bypass of Newtowncunningham and passing through Speenoge. The route turns east (with the R239 linking Buncrana) southeast at Bridge End to end at the border with Northern Ireland becoming the A2 road northwest of Derry and linking the city centre, and over Craigavon Bridge to Londonderry railway station in the Waterside.