|Via:||Port Laoise, Carlow|
|Distance:||114.7 km (71.3 miles)|
|Meets:||N52, R443, R422, R423, R445, N77, R426, R425, R427, R428, N78, R429, R924, R417, R448, R888, R726, R725, M9, N81, R724, R745, N11|
|Route outline (key)|
The N80 is an important link road running between the midlands and south-east of Ireland. It connects several routes radiating from Dublin.
The route starts in County Offaly at Clonminch Roundabout on the N52 Tullamore bypass, south of the town centre, and runs via Port Laoise and Carlow to end on the N11 at Ballynahallin just north of the centre of Enniscorthy, County Wexford.