===Towns along the river===* Aran Valley (Spain): Vielha* Haute-Garonne (31): Saint-Gaudens, Muret, Toulouse* Tarn-et-Garonne (82): Castelsarrasin* Lot-et-Garonne (47): Agen, Marmande, Aiguillon* Gironde (33): Langon, Bordeaux, Blaye, Le Verdon-sur-Mer* Charente-Maritime (17): Royan==Main tributaries==Following the flow of the river:==Navigation==The Garonne plays an important role in inland shipping.
Med letoma 1982 in 1990 je bil trinajsti kraljevi astronom.