| Castres to Marco de Canavezes | 555.90 mi (894.64 km) |
| Castres to Marinha Grande | 634.80 mi (1,021.60 km) |
| Castres to Massama | 685.53 mi (1,103.25 km) |
| Castres to Matosinhos | 582.67 mi (937.72 km) |
| Castres to Mealhada | 592.16 mi (952.99 km) |
| Castres to Melgaco | 542.03 mi (872.31 km) |
| Castres to Melres | 570.95 mi (918.85 km) |
| Castres to Mira | 604.18 mi (972.33 km) |
| Castres to Miranda do Corvo | 595.38 mi (958.17 km) |
| Castres to Mirandela | 501.54 mi (807.15 km) |
| Castres to Mogadouro | 482.81 mi (777.00 km) |
| Castres to Moimenta da Beira | 535.26 mi (861.42 km) |
| Castres to Moita | 676.47 mi (1,088.68 km) |
| Castres to Moncao | 553.37 mi (890.56 km) |
| Castres to Montalegre | 524.01 mi (843.31 km) |
