GR125 from Magny-en-Vexin to Saint-Valery-sur-Somme

Hiking on the GR®125 across the departments of Val d'Oise, Oise and Somme starting from Magny-en-Vexin to Saint Valery-sur-Somme.
This long-distance trail connects Île-de-France to the English Channel. After the French Vexin and a brief excursion into Normandy, near Gisors, it visits the Bray region, crosses Amiénois and Vimeu before ending in the Bay of Somme.