Roll out of Sort-en-Chalosse and let the ride unfold along the water: first the Gave de Pau, then the Gave d'Oloron, before the Gaves Réunis and the Luy carry you onward. The 73.9 km loop climbs 551 m in total, all of it on paved surface. A stop at the castle Domaine du Sarrat rounds things off before you spin back to where you started.
