Parc du Marquenterre – On the Seagull Route loop from Gare du Crotoy

Saint-Valery-Sur-Somme via the pointe de Houdel — loop from Cayeux-sur-Mer in the parc naturel régional Baie de Somme Picardie Maritime

Le Crotoy by Marais Communal — loop from Quend Plage les Pins

From Abbeville to Amiens via the Somme valley — from Abbeville

Seaside Cycle Route: Cliffs of Criel Loop

Cliffs of Ault and Bois de Cise Loop

Baie de Somme South Coast Loop

South coast loop of the Baie de Somme

Berck and foraine d’Authie in a loop

Château d'Arrest by the canal de la somme — loop from Saint-Valery

Château d'Eaucourt-sur-Somme and château de Long — loop from Abbeville in the Parc Naturel Régional Baie de Somme Picardie Maritime

Nature reserve coastal trail — loop from Onival in the Baie de Somme Picardie Maritime regional natural park

The cliffs of Criel by the château d'Eu — loop from Eu