| Alpena to Mangualde | 3,703.39 mi (5,960.04 km) |
| Alpena to Marco de Canavezes | 3,665.16 mi (5,898.50 km) |
| Alpena to Marinha Grande | 3,681.96 mi (5,925.54 km) |
| Alpena to Massama | 3,703.03 mi (5,959.44 km) |
| Alpena to Matosinhos | 3,640.69 mi (5,859.12 km) |
| Alpena to Mealhada | 3,680.63 mi (5,923.40 km) |
| Alpena to Melgaco | 3,626.83 mi (5,836.82 km) |
| Alpena to Melres | 3,658.22 mi (5,887.33 km) |
| Alpena to Mira | 3,666.13 mi (5,900.06 km) |
| Alpena to Miranda do Corvo | 3,696.17 mi (5,948.41 km) |
| Alpena to Mirandela | 3,697.21 mi (5,950.08 km) |
| Alpena to Mogadouro | 3,723.23 mi (5,991.97 km) |
| Alpena to Moimenta da Beira | 3,696.33 mi (5,948.67 km) |
| Alpena to Moita | 3,720.25 mi (5,987.16 km) |
| Alpena to Moncao | 3,618.94 mi (5,824.13 km) |
