This ten-day line explains southwest France through its cities rather than pretending the railway reaches every vineyard and village. Bordeaux opens with Atlantic-facing stone quays and wine culture. Toulouse receives three nights because its brick architecture, markets, aerospace interests and Canal du Midi atmosphere merit more than a connection. Carcassonne then shifts the scale toward fortification and a divided upper-and-lower city. Narbonne contributes Roman history, market life and a single overnight before Montpellier provides the final pedestrian, tram-linked finish. The arithmetic is active but honest: nine nights, four transfers and no hidden rural detours. One-night bases require confirmed luggage handling and hotel geography. The route avoids fixed journey-time claims because engineering work and service patterns change; official live results decide the departure, while this page explains which transfer deserves protected time and why.