| Belm to Marco de Canavezes | 1,083.55 mi (1,743.80 km) |
| Belm to Marinha Grande | 1,186.74 mi (1,909.87 km) |
| Belm to Massama | 1,252.68 mi (2,015.99 km) |
| Belm to Matosinhos | 1,101.84 mi (1,773.23 km) |
| Belm to Mealhada | 1,136.50 mi (1,829.01 km) |
| Belm to Melgaco | 1,038.46 mi (1,671.23 km) |
| Belm to Melres | 1,098.03 mi (1,767.11 km) |
| Belm to Mira | 1,143.02 mi (1,839.52 km) |
| Belm to Miranda do Corvo | 1,148.23 mi (1,847.89 km) |
| Belm to Mirandela | 1,035.71 mi (1,666.82 km) |
| Belm to Mogadouro | 1,029.10 mi (1,656.18 km) |
| Belm to Moimenta da Beira | 1,077.03 mi (1,733.31 km) |
| Belm to Moita | 1,249.49 mi (2,010.86 km) |
| Belm to Moncao | 1,047.98 mi (1,686.57 km) |
| Belm to Montalegre | 1,037.73 mi (1,670.07 km) |
