ByRoute 4 connects Brittas on the southwestern outskirts of DUBLIN with Bantry Bay in Co. Cork via:

In Co. Wicklow –

Manor Kilbride, Three Castles, Poulaphouca Reservoir, Blessington, Lacken, Ballyknocken, Valleymount, Poulaphouca & Hollywood,

Donard, Rathdangan & Kiltegan, Knockannana, Moyne,

Tinahely, Shillelagh, Carnew;

In Co. Wexford –

Askamore / Kilrush, Clohamon, Bunclody, Kilmyshall, Templeshanbo, Kiltealy;

In Co. Carlow & Co. Kilkenny –

The Scullogue Gap, Ballymurphy, St. Mullins, Graiguenamanagh – Tinnahinch;

Ullard, Dungarvan & Tullaherin, Stonyford, Kells & Kilree;

Callan;

In Co. Tipperary & Co. Limerick –

Mullinahone, Drangan & Cloneen;

Fethard;

Lisronagh, New Inn & Knockgraffon;

Cahir, Roosca,

Tubbrid &Ballylooby, Burncourt & Skeheenarinky, Ballyporeen, Kilbeheny;

In Co. Cork –

Mitchelstown, Kildorrery;

Doneraile, Kilcolman Bog;

Buttevant, New Two-Pot-House, Castlemagner;

Kanturk, Banteer, Nad & Lyre, Kilcorney, Rathcool;

Millstreet, Kilmeedy, Carriganimmy, Clondrohid;

Macroom, Bealick;

Kilnamartyra, Ballyvourney & Ballymakeera, Coolea, Inchigeela;

Gouganbarra, Keimaneigh Pass, Kealkill, Coomhulla Bridge.