From the famous fortress of Pirou, the twenty kilometres or so will take you to our seaside resorts, such as Gouville-sur-Mer with its famous colourful cabins, Blainville-sur-Mer with its stretches of sand that are ideal for fishing and, of course, Agon-Coutainville, with its long promenade and distinctive architecture.es, Blainville-sur-Mer with its stretches of sand ideal for fishing and, of course, Agon-Coutainville, with its long promenade and distinctive architecture. Strolling along these paths also means passing within a stone’s throw of some of the Channel’s most breathtaking harbours, such as Geffosses and Blainville-sur-Mer. The area is also rich in biodiversity and unique flora and fauna.

The GR 223
From Pirou to Agon-Coutainville, between historical and natural heritage


From Agon-Coutainville to Regnéville-sur-Mer, a short tour of Le Havre de Sienne
For this leg, you will set off from Le Passous towards the Pointe d’Agon, which deserves to be your first stopover. From here, observe the salt meadow sheep grazing peacefully, learn to recognise the extraordinary flora of the area, enjoy the sumptuous setting and the view over the harbour of Sienne, discover the history of the area and learn more about Fernand Lechanteur thanks to the building in his honour.learn more about Fernand Lechanteur thanks to the building erected in his honour, or immortalise the no less famous lighthouse at the Pointe d’Agon. Next, head for Heugueville-sur-Sienne and the Pont de la Roque. A great place to watch the tidal bore, you can then return to the harbour, this time on the south side, via the little hamlet of Urville at Regnéville-sur-Mer. Let yourself be charmed by the narrow streets, the stone houses and the tranquillity that emanates from it. On arrival, be sure to visit the ruins of Regnéville-sur-Mer castle and the maritime museum it houses to learn more about the site’s rich history.


From Regnéville-sur-Mer to Saint-Martin-de-Bréhal
To round off this part of the customs trail passing through Coutances mer et bocage, head for Le Havre de la Vanlée, the southernmost harbour on the coast of the same name. In between, you’ll have plenty of time to explore the Hauteville-sur-Mer region and the famous Annoville dunes, a site where sand, herbs and marshes combine to make this place quite simply unique. You’ll then continue on to Lingreville, Bricqueville-sur-Mer and its saltworks, and finally Saint-Martin-de-Bréhal.


No less than 50 kilometres of the famous GR 223 pass through our region. From the material and historical heritage to the wealth of fauna and flora at the sites you pass through, you’ll never cease to be amazed and captivated. Backpack on your shoulders, camera around your neck, hiking boots on your feet and now, armed with all this information, all you have to do is take the plunge and let yourself be surprised by all that our beautiful region has to offer.