| Oudenburg to Marco de Canavezes | 870.83 mi (1,401.46 km) |
| Oudenburg to Marinha Grande | 976.34 mi (1,571.27 km) |
| Oudenburg to Massama | 1,044.44 mi (1,680.86 km) |
| Oudenburg to Matosinhos | 886.95 mi (1,427.41 km) |
| Oudenburg to Mealhada | 925.70 mi (1,489.77 km) |
| Oudenburg to Melgaco | 821.52 mi (1,322.10 km) |
| Oudenburg to Melres | 884.77 mi (1,423.89 km) |
| Oudenburg to Mira | 930.88 mi (1,498.10 km) |
| Oudenburg to Miranda do Corvo | 939.02 mi (1,511.21 km) |
| Oudenburg to Mirandela | 825.94 mi (1,329.21 km) |
| Oudenburg to Mogadouro | 822.25 mi (1,323.29 km) |
| Oudenburg to Moimenta da Beira | 867.45 mi (1,396.03 km) |
| Oudenburg to Moita | 1,042.86 mi (1,678.32 km) |
| Oudenburg to Moncao | 830.45 mi (1,336.48 km) |
| Oudenburg to Montalegre | 823.84 mi (1,325.84 km) |
