| Snaresbrook to Mangualde | 844.23 mi (1,358.65 km) |
| Snaresbrook to Marco de Canavezes | 816.21 mi (1,313.57 km) |
| Snaresbrook to Marinha Grande | 923.36 mi (1,486.00 km) |
| Snaresbrook to Massama | 993.43 mi (1,598.77 km) |
| Snaresbrook to Matosinhos | 828.86 mi (1,333.92 km) |
| Snaresbrook to Mealhada | 872.92 mi (1,404.84 km) |
| Snaresbrook to Melgaco | 761.31 mi (1,225.21 km) |
| Snaresbrook to Melres | 829.12 mi (1,334.34 km) |
| Snaresbrook to Mira | 876.12 mi (1,409.98 km) |
| Snaresbrook to Miranda do Corvo | 888.23 mi (1,429.46 km) |
| Snaresbrook to Mirandela | 776.36 mi (1,249.43 km) |
| Snaresbrook to Mogadouro | 776.73 mi (1,250.03 km) |
| Snaresbrook to Moimenta da Beira | 817.36 mi (1,315.42 km) |
| Snaresbrook to Moita | 993.95 mi (1,599.61 km) |
| Snaresbrook to Moncao | 769.11 mi (1,237.77 km) |
