Sea and land at Le Tréport
From the chalk cliffs of the Alabaster Coast to the Eu forest, from the Bresle and Yères valleys to the Baie de Somme. Use the filters to find the walk that suits you — with nothing ticked, everything shows.
See also: Tides · Shellfishing · Events · What to do in Le Tréport
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Distances and elevation gains computed from the GPX tracks. Level and duration are estimates — adapt to your fitness and the weather.
The finest stretch of the GR21: along Mers beach and its Belle Époque villas, then up the chalk cliffs to the wooded oasis of the Bois de Cise.
The coast to the south, towards Dieppe: cliffs, secret valleys and shoreline all the way to Mesnil-Val and Criel-sur-Mer.
A big loop on the heights that dips down to Le Tréport's harbour and lighthouse, before climbing back over the Flocques plateau.
A quiet countryside loop on the plateau between Le Tréport and the village of Flocques.
The tourist office's official route, from Mers-les-Bains to the Bois de Cise and towards Ault, on a balcony above the Alabaster Coast.
An easy little loop from the Mers esplanade up to the Notre-Dame de la Falaise viewpoint — perfect for families.
The grand loop that strings together all the highlights: Mers, the Bois de Cise, the Ault cliff, the Saint-Laurent chapel and its view over Eu and Le Tréport. A full day.
The loop linking the royal town of Eu and its château to Le Tréport harbour along the Bresle; return via the 414 steps or the funicular.
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To explore around
The royal town of Eu, the Eu forest and Petit Caux, the Bresle and Yères valleys, the coast towards Criel-sur-Mer and Dieppe, and the Baie de Somme.
A circuit through the heritage of the royal town of Eu: collegiate church, College chapel, Jerusalem path and the Saint-Laurent chapel perched above the valley.
A quiet loop at the gates of Eu, between the Chemin Vert du Petit Caux greenway, the Bresle and the edges of the royal town.
A loop along the former railway turned Petit Caux greenway and through the countryside around Eu.
The longer version: the Chemin Vert du Petit Caux greenway and a loop through the plateau villages.
The great forest crossing: beneath the beeches of the Eu forest to the Incheville ponds and along the Bresle.
The great crossing of the Triage massif, heart of the Eu forest, along wide forest avenues — a fine day's walk.
From the oasis of the Bois de Cise, the coastal path runs along a balcony to the resort of Ault and its viewpoints.
The GR21 north-bound: from Criel-sur-Mer to Le Tréport, all along the cliffs, with the finest arrival over the harbour.
A loop between the green floor of the Yères valley and the plateau overlooking Criel.
Criel in a nutshell: the village, the woods of Mont Jolibois and the descent to Criel-Plage.
An easy, flat walk along the Bresle and its ponds, rich in water birds.
A short, completely flat loop around the Bassée lake — ideal with young children.
At the entrance to the Baie de Somme: the Hâble d'Ault nature reserve, its pools and birds, between shingle and coastal plain.
From the Picardy countryside to the Hâble d'Ault and its great shingle bank, at the gates of the Baie de Somme.
The Baie de Somme in all its glory: the Hourdel point, its seals and the return along the huge shingle bank (do it at low tide).
A big loop above Gamaches, the "Venice of the Vimeu": the Bresle ponds, the forest edge and the plateau via Guerville.
A loop up the Bresle valley and its ponds, gaining a little height on the wooded plateau, then dropping back down alongside the water.
A gentle route along the Bresle and its ponds, from Longroy-Gamaches station to Le Tréport harbour via Eu. Return possible by train.
A hilly loop above the Yères valley: plateaus, woodland edges and fine viewpoints around Cuverville.
A short, bucolic loop between Canehan and Touffreville-sur-Eu, in the green floor of the Yères valley.
A big loop in the Yères valley and on the plateaus that border it, between Saint-Sulpice, Canehan and Saint-Martin-le-Gaillard.
The pearl of the Baie de Somme: the ramparts and lanes of the medieval town of Saint-Valery, the herbarium and the coastal path facing the bay, starting from Cap Hornu.
From the Ault cliff to the Hâble d'Ault: the reserve, its hunting huts and pools, the shingle bank and the return along the sea wall, at the gates of the Baie de Somme.
A big loop over the plateaus and through the wooded "fonds" (dells) between Glicourt, Breuilly and Envermeu, in the hinterland between the Yères and Dieppe.
Between Glicourt and the hamlets of Sauchay, a country loop through sunken lanes, woods and the little valley, in the Dieppe hinterland.
The grand tour of Belleville-sur-Mer, at the gates of Dieppe: the coastal notch and the beach, then the plateaus and hedged farmland via the Bois Clieu château.
The GR®21 on the Dieppe side: from Saint-Martin-Plage to Criel-sur-Mer, between cliffs, coastal plateau and valleys. A one-way route — plan your return.
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Never go near the edge of the chalk cliffs (collapses) and don't stand at their foot (rockfalls, a trapping tide). Bring good shoes and check the weather and tide times before setting off.
Yes. The GR21, voted “France's most beautiful trail”, runs along the Alabaster Coast: Le Tréport is its starting point, heading towards Criel-sur-Mer, Dieppe, then Étretat and Le Havre.
Yes, along the GR21 on the clifftops — allow a long day's walk (about thirty kilometres) or several stages.
The climb to the cliffs and a tour of the upper town, the seafront promenade, or the waymarked loops shown on this page, filterable by length and difficulty.