| Bourne to Mangualde | 909.26 mi (1,463.31 km) |
| Bourne to Marco de Canavezes | 879.11 mi (1,414.79 km) |
| Bourne to Marinha Grande | 986.35 mi (1,587.37 km) |
| Bourne to Massama | 1,056.95 mi (1,700.99 km) |
| Bourne to Matosinhos | 890.04 mi (1,432.39 km) |
| Bourne to Mealhada | 936.29 mi (1,506.81 km) |
| Bourne to Melgaco | 821.98 mi (1,322.84 km) |
| Bourne to Melres | 891.46 mi (1,434.66 km) |
| Bourne to Mira | 938.57 mi (1,510.48 km) |
| Bourne to Miranda do Corvo | 952.38 mi (1,532.70 km) |
| Bourne to Mirandela | 841.73 mi (1,354.64 km) |
| Bourne to Mogadouro | 843.76 mi (1,357.90 km) |
| Bourne to Moimenta da Beira | 882.24 mi (1,419.83 km) |
| Bourne to Moita | 1,058.38 mi (1,703.30 km) |
| Bourne to Moncao | 829.16 mi (1,334.41 km) |
