| Bletchley to Mangualde | 854.53 mi (1,375.24 km) |
| Bletchley to Marco de Canavezes | 824.80 mi (1,327.39 km) |
| Bletchley to Marinha Grande | 932.05 mi (1,499.99 km) |
| Bletchley to Massama | 1,002.56 mi (1,613.46 km) |
| Bletchley to Matosinhos | 836.12 mi (1,345.61 km) |
| Bletchley to Mealhada | 881.90 mi (1,419.28 km) |
| Bletchley to Melgaco | 768.15 mi (1,236.22 km) |
| Bletchley to Melres | 837.27 mi (1,347.46 km) |
| Bletchley to Mira | 884.38 mi (1,423.27 km) |
| Bletchley to Miranda do Corvo | 897.83 mi (1,444.92 km) |
| Bletchley to Mirandela | 786.93 mi (1,266.44 km) |
| Bletchley to Mogadouro | 788.69 mi (1,269.27 km) |
| Bletchley to Moimenta da Beira | 827.54 mi (1,331.79 km) |
| Bletchley to Moita | 1,003.81 mi (1,615.47 km) |
| Bletchley to Moncao | 775.49 mi (1,248.03 km) |
