| Castanet-Tolosan to Montemor-o-Novo | 606.82 mi (976.58 km) |
| Castanet-Tolosan to Montemor-o-Velho | 572.37 mi (921.15 km) |
| Castanet-Tolosan to Montijo | 635.35 mi (1,022.49 km) |
| Castanet-Tolosan to Mortagua | 542.91 mi (873.73 km) |
| Castanet-Tolosan to Moura | 597.04 mi (960.85 km) |
| Castanet-Tolosan to Murtosa | 553.19 mi (890.27 km) |
| Castanet-Tolosan to Nazare | 608.92 mi (979.96 km) |
| Castanet-Tolosan to Nelas | 522.30 mi (840.56 km) |
| Castanet-Tolosan to Obidos | 621.56 mi (1,000.31 km) |
| Castanet-Tolosan to Odemira | 670.67 mi (1,079.34 km) |
| Castanet-Tolosan to Odivelas | 643.60 mi (1,035.77 km) |
| Castanet-Tolosan to Oeiras | 653.85 mi (1,052.27 km) |
| Castanet-Tolosan to Olhao | 665.14 mi (1,070.43 km) |
| Castanet-Tolosan to Oliveira de Azemeis | 542.66 mi (873.32 km) |
| Castanet-Tolosan to Oliveira de Frades | 532.14 mi (856.40 km) |
