From Marciac, this 59.6 km loop rolls out past the Le Bouès river, then follows L'Arros and later L'Adour, before joining the Canal d'Alaric on the way back. With 452 m of climbing and a mix of paved and unpaved surface, it keeps things varied under the wheels. Ride the rivers in order, tick off the canal, and roll home to Marciac.
