Dublin To Kilkenny

Getting From Dublin to Kilkenny — What Actually Works

The route between Dublin and Kilkenny is about 140 kilometres. Most people assume it is straightforward, but the reality depends entirely on whether you are driving, taking the bus, or trying to wait for a train that does not exist yet. The M9 motorway is the main artery. You leave Dublin via the M50 and join the M9 at Junction 4. It is a clean, mostly dual-carriageway run that takes roughly an hour and twenty minutes under normal conditions. Exit at Junction 10 for Kilkenny city centre. Real talk about the M9: it is one of Ireland's quieter motorways, which sounds good until you hit the stretch between Graiguenamanagh and Kilkenny where the speed limit drops and the road narrows slightly. You will see trucks slowing down. Give them space. The last time I ran this trip late evening, a lorry was doing 60 through a 100 zone and I nearly clipped the mirror of the car in front because I was still covering 110 behind it. Easy enough to fix — just ease off early.

Toll? No tolls on this route. That is rare for an Irish motorway and worth noting. Most people do not expect it.

Dublin To Kilkenny by Bus

Bus Éireann runs Route 350 from Dublin city centre (Busáras) to Kilkenny. The journey takes approximately two hours to two hours and twenty minutes depending on stops. Buses run roughly hourly during the day. The service is decent — modern coaches, Wi-Fi that works about half the time, and a luggage bay under the floor. I took this route last autumn and hit a problem that nobody mentions on the booking sites. A road closure near Thomastown due to emergency roadworks forced a thirty-minute detour via the N7. The driver handled it fine but the app had no live update. If you are relying on a tight connection in Kilkenny, you are at the mercy of whatever the road situation is at the moment. My workaround was simple: call the Bus Éireann dynamic customer service line before boarding. They gave me a real-time heads-up on the delay. The number is on their website and it is usually answered within a few minutes.

The Train Question

This is where people get confused. There is currently no direct rail service from Dublin to Kilkenny. The line existed historically but was closed to passengers decades ago. There have been repeated proposals to reopen it, sometimes called the Irish InterCity project or linked to the broader Transport 21 plan, but nothing has broken ground. As of now, if you want rail, you would take a train from Dublin Heuston to something like Portlaoise or Tullamore and then transfer to a bus — which is slower and usually more expensive than just taking the bus directly. So for most practical purposes, Dublin To Kilkenny is a road journey. Car or bus. That is the working reality.

Timing and Frequency

Buses depart Busáras roughly every hour between 6am and 9pm. The first bus leaves around 6:10am and the last around 9:15pm. If you miss the last one, you are driving or finding a taxi, which will cost you well over a hundred euro. Driving gives you flexibility but also parking headaches. Kilkenny city centre has Pay & Display bays and the multi-storey at John F. Kennedy Park costs around eight euro for a full day. Street parking fills up by noon on market days. I learned this the hard way and ended up parking near the Slieveardagh area and walking in — about fifteen minutes. Not ideal but it saved me circling for forty minutes.

Fuel and Costs

A typical car using the M9 will burn somewhere between seven and nine litres for the full trip. At current fuel prices that puts you at roughly twelve to fifteen euro each way. The bus fare is around seventeen to twenty-two euro return depending on when you book. If you are travelling solo and need flexibility, driving often comes out cheaper after the second leg of the trip. If you are a single passenger making one journey, the bus is competitive and removes the stress of navigating a city you may not know well. The M9 has limited service areas. The only proper one is at Threecastles Junction, roughly midway. Fuel is available there but it is pricier than stations in Dublin or Kilkenny itself. Fill up before you leave the capital or plan to top up in Kilkenny on your way back. Mobile coverage along the M9 is generally good on both main networks, but there are brief dead zones around the Carrickshock area where the road cuts through hilly terrain. If you are using turn-by-turn navigation, download the offline map region beforehand. It saved me once when the signal dropped and my satnav went fuzzy for about three kilometres.

The N7 alternative route via the old road exists but I would not recommend it unless the M9 is closed. It goes through towns, has traffic lights, and adds at least twenty minutes to the journey. Only use it as a fallback. If you are travelling with a group of three or four people, splitting the fuel cost makes driving significantly cheaper per person than the bus. Factor in parking and you are still usually ahead unless you are staying central and willing to pay the premium. For a solo traveller who does not want to drive, the bus is fine. Just book ahead on weekends — prices go up and seats disappear faster than you would expect.

What About the Future?

There is ongoing political discussion about restoring the rail link between Dublin and Kilkenny. The Department of Transport has floated it periodically. If and when it happens, it would likely terminate at Heuston and follow a corridor close to the old line. Until there is an official construction timeline and funding commitment, treat it as aspirational. Plan your travel around what exists today. Bottom line: the M9 is the route. Bus Éireann 350 is the bus. Driving takes about an hour and twenty minutes. The train is not an option right now. Book the bus in advance if you can, keep an offline map downloaded, and fill your tank before you hit the motorway. Everything else is just detail.