| Sowerby Bridge to Mangualde | 945.53 mi (1,521.68 km) |
| Sowerby Bridge to Marco de Canavezes | 912.43 mi (1,468.41 km) |
| Sowerby Bridge to Marinha Grande | 1,019.07 mi (1,640.03 km) |
| Sowerby Bridge to Massama | 1,090.06 mi (1,754.28 km) |
| Sowerby Bridge to Matosinhos | 920.80 mi (1,481.88 km) |
| Sowerby Bridge to Mealhada | 969.89 mi (1,560.88 km) |
| Sowerby Bridge to Melgaco | 852.56 mi (1,372.06 km) |
| Sowerby Bridge to Melres | 923.87 mi (1,486.82 km) |
| Sowerby Bridge to Mira | 970.81 mi (1,562.36 km) |
| Sowerby Bridge to Miranda do Corvo | 987.04 mi (1,588.48 km) |
| Sowerby Bridge to Mirandela | 879.02 mi (1,414.64 km) |
| Sowerby Bridge to Mogadouro | 883.55 mi (1,421.94 km) |
| Sowerby Bridge to Moimenta da Beira | 918.47 mi (1,478.14 km) |
| Sowerby Bridge to Moita | 1,092.86 mi (1,758.79 km) |
| Sowerby Bridge to Moncao | 858.81 mi (1,382.11 km) |
