Check on the official web site On its 240-km (149-mile) journey, the Midi Canal first rises 63 metres (206 feet), via 26 locks, on its 51.5-km (32-mile) stretch from Toulouse to its 5-km- (3-mile-) long summit, then descends 189 metres (620 feet) in 183.5 km (114 miles) by 74 locks to Étang de Thau. 1. Canal du Midi section can be done at any time (*unless it freezes or there is a better than the English. (SN6), MAIN CANALS VIA CALAIS OR LE HAVRE // -->