As the crow flies, the Gulf of Morbihan begins barely thirty minutes from your perched treehouse near Carnac, where the sea slips inland and settles between the islands. In early summer the light lingers until ten in the evening and the villages have yet to tip into the 14 July crowds: the perfect window to loop right around this little inland sea. Here is the itinerary we quietly pass to guests who want to see it all without ever rushing, from the northern shore to the Rhuys peninsula, closing the loop at Locmariaquer.
Where do you start, and how long do you need from Carnac?
The gulf almost closes on itself, with Vannes at its head, the Rhuys peninsula to the south and the opening to the ocean in the west, facing Locmariaquer. From Ploemel you reach the northern shore in 35 minutes through the Auray countryside, and Vannes in 45. A single day is enough to trace its outline by following the coast from west to east, though two days give you the room for a crossing to an island and a plate of oysters straight from the grower.
In early summer, setting off around 9.30 am after the breakfast hauled up on a pulley opens a full day of light. We suggest tracing the loop along the northern shore first, the Rhuys peninsula next, so you finish facing the setting sun on the Locmariaquer side. The gulf also sets its own tempo, that of the tide. With every cycle, 200 to 400 million cubic metres of water pour through the 900-metre mouth that opens it to the ocean, enough to drive one of the most powerful currents in Europe and to drain certain headlands, tidal fords and oyster beds at low water. Glance at the tide times before you leave, they govern much of the day.
The northern shore, from Larmor-Baden to the Arradon headlands
Larmor-Baden opens the gulf on its northern side, its small harbour turned towards the oyster parks and the jetty for the Gavrinis cairn. This Neolithic mound, raised on its own island, is a fifteen-minute boat ride away, and its inner walls are covered with spiral carvings close to 6,000 years old, among the finest in Europe. Access is by guided tour only, by reservation, from April to early November: book the day before in July, the departures fill by mid-morning.
The spiral carvings of the Gavrinis cairn, among the finest in Europe, illustration.
Heading east, the Pointe d'Arradon offers one of the truest views over the sea of a thousand reflections, with the Île aux Moines and the Île d'Arz lying offshore. A bench, a low wall, the scent of pines: you understand there why the gulf is said to calm the mind. Walkers carry on along the GR34 coastal path, which hugs the water almost the whole way. You are only a few kilometres from the most beautiful beaches in Brittany, should the urge for a swim take you along the way.
Vannes, the town stop at the head of the gulf
Vannes nestles right at the far end of the inland sea, and it is the only real town on the loop. You park at the Rabine car park, beside the marina that runs up to the medieval heart, then you walk. The walled town unfurls its flowered ramparts, its Douves gardens clipped below, its half-timbered houses leaning over the lanes and Saint-Pierre cathedral at its centre. The Garenne wash houses, at the foot of the walls, remain the view everyone photographs.
If your visit falls on a Wednesday or Saturday morning, the market spills across the Place des Lices and the covered halls, among market gardeners, farmhouse cheeses and fish landed that morning. A few steps away, on the corner of Rue des Halles, watches Vannes and his wife, a stone couple carved in the sixteenth century that has become the town's emblem; no one now knows what object their hands, broken today, once held.
It is the moment to buy something to picnic on further along. Allow two hours to taste the town without skimming it, more if you push on to the Pointe de Conleau and its little peninsula, where boats also leave for the Île d'Arz.
The Rhuys peninsula, the gulf's other shore
From Vannes, the road runs south and tips onto the Rhuys peninsula, that long arm of land that closes the gulf and separates the little sea from the ocean. The contrast is striking: on the gulf side, calm water and oyster parks; on the open side, beaches facing the Atlantic. Suscinio castle stands halfway along, between dunes and marsh, a former residence of the Dukes of Brittany set alone before the sea, one of the strongest visits in the area.
Suscinio castle, a former residence of the Dukes of Brittany, standing alone between dunes and marsh, illustration.
At the tip of the peninsula, Arzon lines up two faces: Port du Crouesty, the largest marina in Brittany, and old Port-Navalo, the maritime gateway to the gulf where the boats thread through the current. Take time for the path to the Pen Castel mill, an old tide mill tucked at the head of a cove. From Port-Navalo, one small detail changes everything for the rest of the loop: a passenger ferry crosses the mouth of the gulf to Locmariaquer in about fifteen minutes, saving you the drive back up through Vannes to return towards Carnac.
A stop on the islands, alongside the loop
The islands are the soul of the gulf, and an old Breton saying claims there are as many as days in the year. The land registry is more sober: 48 islands stay permanently above water, 24 are lived on for part of the year and only two all year round, the Île aux Moines and the Île d'Arz. Those are precisely the two easy stops to slip into the loop.
The Île aux Moines, nicknamed the pearl of the gulf, is a five-minute crossing from Port-Blanc at Baden, and is best explored by bike hired on the slipway; its neighbour the Île d'Arz, flatter and more secluded, is walked along the coastal path. A stop of two or three hours is enough to breathe in its atmosphere between two mainland stages.
Interactive comparison of the Ile aux Moines and the Ile d'Arz.
If you want to give them a proper day, beaches and the full island loop included, it is better to set aside a whole day than to squeeze them between two visits. On a loop that embraces both shores, the island stays a pause, a stop to catch your breath in the middle of the route.
Another way to see the gulf, between kayak and oysters
The finest way to grasp the gulf is still to take it by water. A sea kayak hired at Larmor-Baden or Sarzeau slides you between the private islets, out to the Île Berder, which you can also reach on foot by a causeway swallowed by the rising tide twice a day. For an effortless version, the companies at Vannes, Port-Navalo and Locmariaquer run guided tours of the gulf, often with a double island stop.
That leaves the most Breton pleasure of all, tasting the oyster where it grows. Around Le Hézo, Séné and the Noyalo river, oyster farmers open their huts in the afternoon and serve the dozen facing the parks, a glass of white in hand. Nothing beats an oyster opened ten metres from its bed. We are always happy to prepare a hamper to take away, organic wine from Carnac and local cheeses gathered at the markets around Carnac, to stretch the pause by the water rather than at a café table.
Closing the loop at Locmariaquer and back to Carnac
The loop closes naturally at Locmariaquer, at the mouth of the gulf, just twenty minutes from your cabin. The megalithic site lays down the Grand Menhir brisé, 20.60 metres and nearly 280 tonnes of granite raised around 4500 BC, the largest standing stone ever erected in Europe, now broken into four. Right beside it, the engraved slab that caps the Table des Marchands is a fragment of another giant stele, one piece of which was reused all the way at the Gavrinis cairn seen that very morning: the Neolithic builders took their own monuments apart to raise them again from one shore to the other.
You tour the whole thing in a short hour. The Pointe de Kerpenhir and its statue of Notre-Dame keep watch over the mouth of the gulf, where the currents rush between the two shores. It is the best place for one last look at the inland sea before heading home.
From Locmariaquer, Ploemel is only a quarter of an hour of small roads away. You find the quiet of the woods again around 7 pm, just in time for a session at the spa in the old cowshed, an infusion in the guest lounge and, if you ordered one, dinner delivered to your cabin terrace. The day will have traced a full circle around the water, and you will have seen the gulf as few hurried visitors do. A smooth loop still hangs on a few details particular to this inland sea and its tides.
What to plan for the loop
- Check the tide times before you leave, several headlands and crossings only appear at low water.
- Book the Gavrinis cairn tour the day before in summer, departures fill from mid-morning.
- Bring sturdy shoes for the coastal paths and a light layer, the gulf wind surprises even in July.
- Park early in Vannes and at the jetties, before 10.30 am in high season.
Frequently asked questions
How many days do you need to visit the Gulf of Morbihan?
One day is enough to follow the coast and see the main sites from Carnac. Two days are more comfortable if you want to add a crossing to an island, an oyster tasting and a visit to Suscinio castle without watching the clock.
When is the best time to discover the gulf?
Early summer, in June and early July, brings the longest days, water that is warming up and a still-reasonable number of visitors before mid-July. September offers the same mildness with superb light.
Can you drive around the Gulf of Morbihan?
Yes, the road follows both shores, from the north towards Vannes and then the Rhuys peninsula. The ferry between Port-Navalo and Locmariaquer even shortens the way back to Carnac by crossing the mouth of the gulf by boat.
Where can you eat oysters in the Gulf of Morbihan?
The oyster farmers of Le Hézo, Séné and the shores of the Noyalo river open their huts in the afternoon and serve the dozen facing the parks. It is the most direct way to taste an oyster raised in these waters.
"Entre Golfe Morbihan" by Stéphane Batigne, via Wikimedia Commons, licensed under CC BY-SA 3.0.
