Driving Times in Ireland: Real Distances and How Long Each Drive Takes

Every distance and time on this page is for one named drive, from one named point to another, and we say how each figure was worked out. Each drive gets two times, because they answer different questions.

Moving time is the car moving: no stops, no traffic. A satnav gives you this figure. Realistic time adds the breaks you should take on a long drive. It is our estimate, and the formula is below.

The short answer: 19 drives, two times each

Distances in the Republic are in kilometres. Drives wholly in Northern Ireland are in miles first, because that is what the road signs there use. Drives that cross the border show both.

These are one-way figures for the direction shown. The drive back can differ by a few kilometres, because one-way streets and motorway junctions are not the same in both directions.

Why two times, and which one your satnav gave you

The moving time comes from a routing engine with no live traffic. It assumes the car never stops. The arrival time on your satnav or phone is the same kind of figure, though apps that use live traffic will adjust it as you go. Nobody should drive three hours without stopping.

The realistic time adds breaks. The Road Safety Authority, An Garda Síochána and the Health and Safety Authority give this advice in their Safe Driving for Work handbook (read October 2026):

"Plan when and where you will take breaks. Rule of thumb is a 15 minute break for every two hours driven"

So our formula is:

• the moving time;
• plus one break for every full two hours of moving time;
• with each break counted at 15 to 20 minutes. The 15 is the RSA's figure. The extra 5 is ours, because a coffee stop rarely takes exactly 15 minutes.

A drive under two hours gets no added break, so its two times are the same.

What the formula leaves out: getting out of the city. If you start or finish in Dublin, Cork or Belfast at rush hour, allow another 30 to 60 minutes on top. That is our estimate too. We keep it out of the table because it depends on the time of day: outside rush hour it can be close to nothing.

Stops for lunch, photos and sightseeing are not in either figure. On a scenic drive they are most of the day. Our road trip routes give a separate realistic time for that reason.

The drives that are motorway the whole way, and the ones that are not

Three drives are motorway for all of the long stretch, once you are out of the city:

• Dublin – Galway (M4, then M6)
• Dublin – Cork (M7, then M8)
• Dublin – Limerick (N7 to Naas, then the M7)

On these, the moving time holds up best: there are few towns or junctions to slow you.

Every other drive in the table leaves the motorway for national roads (N), regional roads (R) or, in Northern Ireland, A and B roads. Those are slower, and the gap between the satnav figure and your day grows:

• Dublin – Killarney leaves the M8 at Mitchelstown for the N73 and N72 through Mallow.
• Dublin – Donegal Town leaves the N4 near Carrick-on-Shannon for the R280 north through Leitrim, a regional road through small towns, before the N15.
• Dublin – Derry leaves the M1 for the N33 and the N2 through Monaghan, then the A5 through Tyrone.
• Cork – Killarney and Galway – Westport have no motorway at all.
• Shannon Airport – Dingle ends on the N86, the national road into the Dingle Peninsula, which is far slower than a motorway.

Crossing the border: Dublin to Belfast

Two drives in the table cross into Northern Ireland:

• Dublin – Belfast crosses at the border south of Newry, where the M1 becomes the A1.
• Dublin – Derry crosses just south of Aughnacloy, where the N2 becomes the A5.

There is no checkpoint. What changes at the line:

• Units. Distance signs switch to miles and speed limit signs to miles per hour. Your hire car's speedometer may show km/h most prominently, so check which scale you are reading.
• Currency. Fuel and parking in Northern Ireland are priced in pounds sterling.
• Tolls. There are none north of the border.
• Your hire car. Driving a Republic hire car into Northern Ireland is a named condition on the rental agreement, not an assumption. Check it before you set off.

On Dublin – Belfast, the fastest route from O'Connell Bridge leaves the city through the Dublin Port Tunnel. That is a booth toll, and its price depends on direction and time (see below). It is not the M50, and M50 advice does not apply to it.

Tolls on these drives

These are the toll points on the road each drive actually takes, from the routes in the table. Car rates were checked against TII on 17 September 2026, in euro. TII revises them each January.

Every toll point in this table has a booth, and you pay as you pass. None of these drives, from the points we used, crosses the M50 toll, the barrier-free one with no booth and a deadline of 8pm the next day. A drive south or west from Dublin Airport usually does cross it. The toll roads guide explains where the M50 toll is and how to pay it.

For the fuel half of the cost, the fuel guide has pump prices and worked fuel-cost examples. Use the distances above.

Planning a longer trip

These are point-to-point drives, the legs between bases. For how many days to give a region, and which routes to drive once you are there, start with the road trip planning guide.

Two of our own routes start and end at points in this table but take the long way on purpose:

• The Causeway Coastal Route runs from Belfast to Derry along the Antrim coast, 206 km against 114 km on the M2 and A6. It is the scenic drive, not the fast one.

How these figures were worked out

Distances and moving times were calculated with the Mapbox Directions API in October 2026, using its standard driving profile with no live traffic, and taking the fastest route it returned. Mapbox is a mapping company, not a State body. The same engine checks the distances on our road trip pages. Distances are rounded to the nearest kilometre, times to the nearest minute.

The points. "Dublin to Galway" means from one exact spot to another. These are the spots:

Realistic times are our estimate, from the formula above and the RSA's two-hour rule of thumb.

Tolls are read from each scheme's own page on TII, checked 17 September 2026. Each toll in the table is on the road the route actually takes, not one we assumed.