| West Boldon to Mangualde | 1,032.36 mi (1,661.42 km) |
| West Boldon to Marco de Canavezes | 998.91 mi (1,607.59 km) |
| West Boldon to Marinha Grande | 1,105.38 mi (1,778.94 km) |
| West Boldon to Massama | 1,176.39 mi (1,893.22 km) |
| West Boldon to Matosinhos | 1,006.88 mi (1,620.42 km) |
| West Boldon to Mealhada | 1,056.37 mi (1,700.06 km) |
| West Boldon to Melgaco | 938.67 mi (1,510.65 km) |
| West Boldon to Melres | 1,010.20 mi (1,625.77 km) |
| West Boldon to Mira | 1,057.08 mi (1,701.21 km) |
| West Boldon to Miranda do Corvo | 1,073.65 mi (1,727.88 km) |
| West Boldon to Mirandela | 965.99 mi (1,554.61 km) |
| West Boldon to Mogadouro | 970.73 mi (1,562.24 km) |
| West Boldon to Moimenta da Beira | 1,005.32 mi (1,617.90 km) |
| West Boldon to Moita | 1,179.39 mi (1,898.05 km) |
| West Boldon to Moncao | 944.76 mi (1,520.44 km) |
