| Castelsarrasin to Lagoa | 1,452.76 mi (2,338.00 km) |
| Castelsarrasin to Lagos | 701.34 mi (1,128.71 km) |
| Castelsarrasin to Lamego | 496.75 mi (799.43 km) |
| Castelsarrasin to Leiria | 588.87 mi (947.70 km) |
| Castelsarrasin to Lisbon | 645.43 mi (1,038.72 km) |
| Castelsarrasin to Loule | 673.66 mi (1,084.16 km) |
| Castelsarrasin to Loures | 641.58 mi (1,032.52 km) |
| Castelsarrasin to Lourinha | 631.01 mi (1,015.51 km) |
| Castelsarrasin to Lousa | 550.65 mi (886.19 km) |
| Castelsarrasin to Lousada | 510.82 mi (822.08 km) |
| Castelsarrasin to Macedo de Cavaleiros | 443.82 mi (714.26 km) |
| Castelsarrasin to Mafamude | 533.35 mi (858.35 km) |
| Castelsarrasin to Mafra | 644.21 mi (1,036.75 km) |
| Castelsarrasin to Maia | 530.51 mi (853.78 km) |
| Castelsarrasin to Mangualde | 511.07 mi (822.48 km) |
