| Casier to Marco de Canavezes | 1,068.34 mi (1,719.32 km) |
| Casier to Marinha Grande | 1,148.41 mi (1,848.19 km) |
| Casier to Massama | 1,197.72 mi (1,927.55 km) |
| Casier to Matosinhos | 1,094.56 mi (1,761.52 km) |
| Casier to Mealhada | 1,105.82 mi (1,779.64 km) |
| Casier to Melgaco | 1,049.72 mi (1,689.35 km) |
| Casier to Melres | 1,083.49 mi (1,743.71 km) |
| Casier to Mira | 1,117.71 mi (1,798.78 km) |
| Casier to Miranda do Corvo | 1,109.06 mi (1,784.86 km) |
| Casier to Mirandela | 1,013.94 mi (1,631.79 km) |
| Casier to Mogadouro | 996.01 mi (1,602.92 km) |
| Casier to Moimenta da Beira | 1,048.58 mi (1,687.52 km) |
| Casier to Moita | 1,187.96 mi (1,911.83 km) |
| Casier to Moncao | 1,061.01 mi (1,707.53 km) |
| Casier to Montalegre | 1,034.21 mi (1,664.41 km) |
