Irish Rail trains

Iarnród Éireann, known in English as Irish Rail, operates the national rail network across the Republic of Ireland. Dublin is the hub, with InterCity trains radiating out to Cork, Galway, Limerick, Waterford, Sligo, Westport, Ballina, Tralee, and Rosslare. The two main Dublin termini are Heuston, for routes south and west, and Connolly, for the north and the Sligo line.

InterCity (IC) is the main long-distance service, and it is what most Interrail and Eurail travellers will use to move around the country. These trains are modern, and wifi is available on most connections. A few typical journey times give a sense of scale: Dublin Heuston to Cork runs around 2 hours 35 minutes, Dublin Heuston to Galway around 2 hours 25 minutes, and Dublin Heuston to Waterford around 2 hours 10 minutes. Treat these as a general guide rather than a fixed number for every departure, and check the exact schedule on the Irish Rail journey planner before you travel, especially on early morning or late evening services when frequency drops.

One of Ireland's easiest wins for pass holders is the reservation rule. Reservations for InterCity trains are optional. You can book one locally or online at irishrail.ie if you want a guaranteed seat, but you do not have to. This is unusual compared with much of continental Europe, where premium daytime trains often carry a compulsory reservation. Do not assume you need to book ahead here the way you might in France or Italy.

Irish Rail also operates the DART, Dublin's electric suburban network along the coast. An Interrail Pass is valid on the DART, and you simply show your pass at the ticket window to get through the gates rather than buying a separate ticket.

For cross-border travel, the Enterprise service connects Dublin Connolly with Belfast Central in just over two hours. This is a joint service between Irish Rail and Northern Ireland Railways, so it is the one route where you cross from euro to sterling territory without changing trains.

Pass holders get one further benefit: a 30% discount on ferry routes from Ireland to England, France, Scotland, and Wales when travelling with a valid Interrail Pass. Combined with the optional reservation policy on InterCity trains, Ireland is one of the more relaxed countries to add to a wider European rail itinerary. You can turn up and board most InterCity trains without pre-booking a seat, which is not something you can rely on everywhere else on the continent.