| Maryport to Mangualde | 994.37 mi (1,600.29 km) |
| Maryport to Marco de Canavezes | 958.79 mi (1,543.02 km) |
| Maryport to Marinha Grande | 1,064.08 mi (1,712.47 km) |
| Maryport to Massama | 1,134.99 mi (1,826.59 km) |
| Maryport to Matosinhos | 964.69 mi (1,552.52 km) |
| Maryport to Mealhada | 1,016.07 mi (1,635.20 km) |
| Maryport to Melgaco | 896.89 mi (1,443.41 km) |
| Maryport to Melres | 969.28 mi (1,559.91 km) |
| Maryport to Mira | 1,015.70 mi (1,634.61 km) |
| Maryport to Miranda do Corvo | 1,034.09 mi (1,664.21 km) |
| Maryport to Mirandela | 929.32 mi (1,495.59 km) |
| Maryport to Mogadouro | 936.11 mi (1,506.52 km) |
| Maryport to Moimenta da Beira | 967.49 mi (1,557.02 km) |
| Maryport to Moita | 1,139.07 mi (1,833.16 km) |
| Maryport to Moncao | 902.21 mi (1,451.96 km) |
