Explore hiking trails around Ons-en-Bray, Picardie. The best hike near Ons-en-Bray is Centre aquatique Youri Gagarine via Boulevard Youri Gagarine and Rue du Nord, a 4.0 mile out and back trail in Butte des Châtaigniers. Ons-en-Bray has population 1378.0.