Nantes to Westport Road Trip: Epic Coastal Drive Guide

The road from Nantes to Westport is a 1,350-kilometer journey connecting the Loire-Atlantique of France to the rugged west coast of Ireland. This route crosses two countries and a sea border, including a ferry from Roscoff to Cork. A specific fact: the A465 highway in Wales, part of the route if you take a longer UK detour, was the first road in the UK to have variable speed limits.

Key highways: A11 from Nantes to Rennes, then N12 to Morlaix, and D58 to Roscoff. In Ireland, take N20 from Cork to Limerick, then N18 and N17 to Westport. Fuel costs average €1.80/L in France and €1.70/L in Ireland. Tolls on French autoroutes cost about €25 total.

• Best stops Nantes to Westport: Roscoff, Cork, and Limerick.
• How long to drive Nantes to Westport: 7-8 hours plus 14h ferry.
• Is it worth driving Nantes to Westport: Yes, for the coastal scenery and cultural variety.

For tips on finding hidden gems, see how to find the best stops and hidden gems between cities.

The route passes the Loire Valley (UNESCO), the Pink Granite Coast, and the Wild Atlantic Way. The landscapes transition from flat vineyards to rugged cliffs and green hills.

• Natural landscapes: Loire vineyards, Armorique Regional Park, Côte de Granit Rose, Connemara National Park.
• UNESCO sites: Loire Valley (Châteaux), Mont-Saint-Michel (detour possible), Skellig Michael (off Kerry coast).
• Climatic conditions: Mild in Nantes; rainy in Roscoff and Cork; windy on the Wild Atlantic Way.
• Culinary infrastructure: Crêperies in Brittany, seafood in Roscoff, Irish pubs in Cork and Galway.
• Local commerce: Markets in Redon, Carhaix, and Westport's Saturday fair.

Roads are well-maintained but narrow in rural Brittany and the Irish countryside. speed cameras are common in France. Rest zones are available every 20 km on French autoroutes; in Ireland, services are sparse on the N17.

• Family and child suitability: Parc de la Brière, AquaShow in Roscoff, Fota Wildlife Park near Cork.
• Pet-friendly framework: Most French rest stops allow dogs; Irish B&Bs are generally pet-friendly.
• Infrastructure safety: High; Irish roads have lower traffic density but require caution on single-lane roads.
• Hidden off-route spots: Château de la Bretesche (Missillac), Les Abers coast, Burren National Park.
• Fatigue management: Stop every 2 hours; recommended stops at Rennes, Morlaix, and Limerick.
• Things to do between Nantes and Westport: visit the Oyster Festival in Rhuys, hike at Croagh Patrick, explore the Rock of Cashel.