The Échez river flows only in the Hautes-Pyrénées department; it flows through the cities and towns Les Angles, Arcizac-ez-Angles, Escoubès-Pouts, Orincles, Barry, Bénac, Louey, Juillan, Tarbes, Bordères-sur-l'Échez, Oursbelille, Bazet, Andrest Vic-en-Bigorre, Nouilhan, Maubourguet.