| Mariehamn to Marco de Canavezes | 1,768.90 mi (2,846.77 km) |
| Mariehamn to Marinha Grande | 1,874.59 mi (3,016.85 km) |
| Mariehamn to Massama | 1,942.66 mi (3,126.40 km) |
| Mariehamn to Matosinhos | 1,784.51 mi (2,871.88 km) |
| Mariehamn to Mealhada | 1,823.94 mi (2,935.34 km) |
| Mariehamn to Melgaco | 1,718.43 mi (2,765.54 km) |
| Mariehamn to Melres | 1,782.73 mi (2,869.03 km) |
| Mariehamn to Mira | 1,828.99 mi (2,943.47 km) |
| Mariehamn to Miranda do Corvo | 1,837.27 mi (2,956.80 km) |
| Mariehamn to Mirandela | 1,724.18 mi (2,774.80 km) |
| Mariehamn to Mogadouro | 1,720.17 mi (2,768.34 km) |
| Mariehamn to Moimenta da Beira | 1,765.70 mi (2,841.62 km) |
| Mariehamn to Moita | 1,940.91 mi (3,123.59 km) |
| Mariehamn to Moncao | 1,727.04 mi (2,779.40 km) |
| Mariehamn to Montalegre | 1,721.75 mi (2,770.89 km) |
