From Colwyn Bay train to Holyhead, Car ferry to Dun Laoghaire Train Station, line 15 train to Westland Row, Pearse Station, bus to Heuston Train Station, then line 4 train to Kilkenny. 6hrs 09min £82. From Colwyn Bay, Hesketh Road (Eirias Park Arena) bus to Llandudno Junction, train to Holyhead, Car ferry to The Point, tram to Heuston Station, Saint John's Road West, then line 717 bus to Kilkenny, Ormond Road. 8hrs 26min £48. From Colwyn Bay, Hesketh Road (Eirias Park Arena) bus to Llandudno Junction, Broad Street (Malgwyn Primary School), line 5 bus to Bangor, Bus Station (Bangor Bus Station), bus to Holyhead, Car ferry to Crofton Road, Dun Laoghaire, bus to Dublin, then line 7 bus to Kilkenny. 9hrs 03min £59. From Colwyn Bay drive to Holyhead, Car ferry to Dún Laoghaire, then drive to Kilkenny. 4hrs 20min £63.