| Neder-Over-Heembeek to Marco de Canavezes | 898.68 mi (1,446.29 km) |
| Neder-Over-Heembeek to Marinha Grande | 1,002.82 mi (1,613.88 km) |
| Neder-Over-Heembeek to Massama | 1,069.65 mi (1,721.44 km) |
| Neder-Over-Heembeek to Matosinhos | 916.28 mi (1,474.61 km) |
| Neder-Over-Heembeek to Mealhada | 952.37 mi (1,532.69 km) |
| Neder-Over-Heembeek to Melgaco | 852.23 mi (1,371.54 km) |
| Neder-Over-Heembeek to Melres | 913.00 mi (1,469.33 km) |
| Neder-Over-Heembeek to Mira | 958.42 mi (1,542.43 km) |
| Neder-Over-Heembeek to Miranda do Corvo | 964.71 mi (1,552.56 km) |
| Neder-Over-Heembeek to Mirandela | 851.84 mi (1,370.90 km) |
| Neder-Over-Heembeek to Mogadouro | 846.34 mi (1,362.06 km) |
| Neder-Over-Heembeek to Moimenta da Beira | 893.29 mi (1,437.61 km) |
| Neder-Over-Heembeek to Moita | 1,067.12 mi (1,717.36 km) |
| Neder-Over-Heembeek to Moncao | 861.61 mi (1,386.62 km) |
| Neder-Over-Heembeek to Montalegre | 852.43 mi (1,371.85 km) |
