| Otelu Rosu to Mangualde | 1,547.92 mi (2,491.14 km) |
| Otelu Rosu to Marco de Canavezes | 1,551.72 mi (2,497.25 km) |
| Otelu Rosu to Marinha Grande | 1,628.26 mi (2,620.43 km) |
| Otelu Rosu to Massama | 1,674.27 mi (2,694.48 km) |
| Otelu Rosu to Matosinhos | 1,578.34 mi (2,540.10 km) |
| Otelu Rosu to Mealhada | 1,587.21 mi (2,554.36 km) |
| Otelu Rosu to Melgaco | 1,534.94 mi (2,470.25 km) |
| Otelu Rosu to Melres | 1,566.78 mi (2,521.49 km) |
| Otelu Rosu to Mira | 1,599.56 mi (2,574.24 km) |
| Otelu Rosu to Miranda do Corvo | 1,589.36 mi (2,557.83 km) |
| Otelu Rosu to Mirandela | 1,497.34 mi (2,409.73 km) |
| Otelu Rosu to Mogadouro | 1,478.58 mi (2,379.54 km) |
| Otelu Rosu to Moimenta da Beira | 1,530.94 mi (2,463.81 km) |
| Otelu Rosu to Moita | 1,663.52 mi (2,677.18 km) |
| Otelu Rosu to Moncao | 1,546.25 mi (2,488.45 km) |
