Nantes to Kilkenny Road Trip: Full Guide to Cross-Channel Drive

The direct distance from Nantes to Kilkenny is roughly 900 km, but the actual driving route stretches over 1,100 km, requiring a ferry crossing and careful planning across three countries. This guide covers everything you need for a smooth journey.

The route passes through the longest road tunnel in Europe (the Frejus Rail Tunnel is longer, but for cars, the Channel Tunnel is iconic). You'll cross the River Loire, the English Channel, and the Irish Sea.

Starting from the Loire-Atlantique region near Nantes, the countryside unfolds with rolling hills and vineyards. The A11 passes near Angers, famous for its medieval castle and the Apocalypse Tapestry. The N12 through Brittany offers coastal glimpses near Morlaix, with the rugged Pink Granite Coast a short detour.

After crossing to the UK, the Devon countryside near Plymouth features Dartmoor National Park, a vast moorland with wild ponies and granite tors. The M5/A38 corridor is less scenic, but you can veer off to the Cotswolds or the Welsh coast. The route through Wales along the A5 from Shrewsbury to Holyhead crosses Snowdonia National Park, with dramatic mountains and lakes. This is a must-see detour, adding 1 hour but offering breathtaking views.

In Ireland, the M9 from Dublin to Kilkenny passes through the fertile plains of County Kildare and County Carlow, with rolling green fields and occasional ruined castles. Just south of Dublin, you can stop at the Irish National Stud or the Rock of Dunamase in County Laois.

Local commerce varies greatly. In France, stop at farmers' markets in Redon or Guerande for salt and butter. In the UK, visit farm shops in Devon selling clotted cream and cider. In Ireland, roadside stalls often sell fresh soda bread and artisan cheese.

The route from Nantes to Kilkenny involves significant planning for two ferry crossings: Roscoff to Plymouth (Brittany Ferries) and Holyhead to Dublin (Irish Ferries/Stena). Book both crossings well in advance, especially in summer.

• From Nantes, take the A11 towards Rennes, then the N12 to Morlaix and finally the D58 to Roscoff. The drive is 320 km, about 3.5 hours on good roads.
• After the 6-hour ferry to Plymouth, follow the A38/M5 to Bristol, then M5/M6 to Holyhead. This is 480 km, about 5.5 hours excluding breaks.
• The final ferry from Holyhead to Dublin takes 3-3.5 hours. From Dublin, the M9 straight to Kilkenny covers 130 km in 1.5 hours.

Avoid driving in central London; the route skirts west via the M5. If you prefer a shorter sea crossing, you could take the Dover-Calais tunnel route: from Nantes to Calais (580 km, 6h), then 1 hour tunnel, then from Folkestone to Holyhead via M6 (520 km, 6h). This avoids the Roscoff ferry but adds driving time. For best stops between Nantes and Kilkenny, consider overnight stays in Plymouth, Bristol, or Chester.

Fuel costs: Petrol in France is around €1.80/litre, in UK £1.50/litre, and in Ireland €1.70/litre. Tolls in France (A11/A81) cost about €20 for the Nantes-Roscoff section. UK and Irish motorways are mostly toll-free except for the M6 Toll near Birmingham (£7.90).

Road quality is high throughout: French A-roads are excellent, UK motorways are well-maintained, and Irish M-roads are smooth. However, watch for narrow lanes and sudden farm entrances in rural Ireland. Speed cameras are common in France and UK; in Ireland, average speed cameras operate on some sections of the M9.

For families, plan stops every 2-3 hours. In France, a great family stop is the Zoo de la Bourbansais near Dol-de-Bretagne, just off the N12. In the UK, the Fleet Air Arm Museum in Yeovilton (near the A303) or the Welsh Mountain Zoo in Colwyn Bay are excellent. In Ireland, the National Reptile Zoo in Kilkenny is a hit with kids.

Pet-friendly framework: Most French hotels and many B&Bs accept dogs. In the UK, chain hotels like Premier Inn allow pets in some rooms. Irish accommodations are generally pet-friendly, but always check. Ferries: Brittany Ferries allows pets in cars or kennels, while Irish Ferries requires pets to stay in the car deck. Remember to bring an EU/UK pet passport.

Fatigue management: Break the drive into segments. Consider an overnight stay in Brittany near Roscoff before the ferry, another in the region of Chester or Wrexham in Wales, or break the crossing by staying in Dublin before driving to Kilkenny. Rest zones are plentiful: French autoroutes have aires every 20-30 km with picnic areas and toilets. UK motorway services are frequent (every 30-40 miles) but food can be expensive. Irish M9 services are limited; fill up in Dublin.

Hidden off-route spots: Instead of the direct N12, take the D769 through the Monts d'Arrée in Brittany for lunar landscapes. In Wales, turn off the A5 at Betws-y-Coed and explore the Fairy Glen. In Ireland, leave the M9 at Carlow and visit Duckett's Grove, a Gothic ruin.

Is it worth driving Nantes to Kilkenny? For those who enjoy a cross-channel adventure with varied landscapes, the answer is yes. The direct flight is shorter, but the drive offers incredible flexibility, cost savings for families, and the chance to explore three distinct cultures. How long to drive Nantes to Kilkenny? Without stops, the drive is about 20 hours plus 9-10 hours on ferries. Realistically, plan for two to three days to enjoy the journey.