| Thundersley to Mangualde | 855.56 mi (1,376.89 km) |
| Thundersley to Marco de Canavezes | 828.48 mi (1,333.30 km) |
| Thundersley to Marinha Grande | 935.47 mi (1,505.49 km) |
| Thundersley to Massama | 1,005.26 mi (1,617.81 km) |
| Thundersley to Matosinhos | 841.78 mi (1,354.71 km) |
| Thundersley to Mealhada | 884.93 mi (1,424.16 km) |
| Thundersley to Melgaco | 774.51 mi (1,246.46 km) |
| Thundersley to Melres | 841.59 mi (1,354.41 km) |
| Thundersley to Mira | 888.49 mi (1,429.89 km) |
| Thundersley to Miranda do Corvo | 899.89 mi (1,448.24 km) |
| Thundersley to Mirandela | 787.63 mi (1,267.56 km) |
| Thundersley to Mogadouro | 787.25 mi (1,266.95 km) |
| Thundersley to Moimenta da Beira | 828.79 mi (1,333.81 km) |
| Thundersley to Moita | 1,005.40 mi (1,618.03 km) |
| Thundersley to Moncao | 782.54 mi (1,259.37 km) |
