| Castelsarrasin to Montemor-o-Novo | 609.75 mi (981.29 km) |
| Castelsarrasin to Montemor-o-Velho | 568.23 mi (914.48 km) |
| Castelsarrasin to Montijo | 636.66 mi (1,024.60 km) |
| Castelsarrasin to Mortagua | 538.42 mi (866.51 km) |
| Castelsarrasin to Moura | 603.65 mi (971.48 km) |
| Castelsarrasin to Murtosa | 546.60 mi (879.67 km) |
| Castelsarrasin to Nazare | 606.42 mi (975.94 km) |
| Castelsarrasin to Nelas | 518.17 mi (833.91 km) |
| Castelsarrasin to Obidos | 619.84 mi (997.53 km) |
| Castelsarrasin to Odemira | 676.24 mi (1,088.31 km) |
| Castelsarrasin to Odivelas | 643.94 mi (1,036.33 km) |
| Castelsarrasin to Oeiras | 654.31 mi (1,053.00 km) |
| Castelsarrasin to Olhao | 674.22 mi (1,085.06 km) |
| Castelsarrasin to Oliveira de Azemeis | 535.84 mi (862.35 km) |
| Castelsarrasin to Oliveira de Frades | 526.42 mi (847.19 km) |
