| Castagneto Carducci to Marco de Canavezes | 967.74 mi (1,557.42 km) |
| Castagneto Carducci to Marinha Grande | 1,036.05 mi (1,667.36 km) |
| Castagneto Carducci to Massama | 1,077.86 mi (1,734.64 km) |
| Castagneto Carducci to Matosinhos | 995.44 mi (1,602.01 km) |
| Castagneto Carducci to Mealhada | 997.96 mi (1,606.06 km) |
| Castagneto Carducci to Melgaco | 959.61 mi (1,544.34 km) |
| Castagneto Carducci to Melres | 982.36 mi (1,580.95 km) |
| Castagneto Carducci to Mira | 1,011.17 mi (1,627.32 km) |
| Castagneto Carducci to Miranda do Corvo | 998.12 mi (1,606.32 km) |
| Castagneto Carducci to Mirandela | 913.97 mi (1,470.90 km) |
| Castagneto Carducci to Mogadouro | 893.02 mi (1,437.17 km) |
| Castagneto Carducci to Moimenta da Beira | 944.32 mi (1,519.74 km) |
| Castagneto Carducci to Moita | 1,066.28 mi (1,716.01 km) |
| Castagneto Carducci to Moncao | 970.91 mi (1,562.53 km) |
| Castagneto Carducci to Montalegre | 939.64 mi (1,512.21 km) |
