| Oldenburg in Holstein to Marco de Canavezes | 1,258.41 mi (2,025.22 km) |
| Oldenburg in Holstein to Marinha Grande | 1,362.43 mi (2,192.61 km) |
| Oldenburg in Holstein to Massama | 1,428.99 mi (2,299.74 km) |
| Oldenburg in Holstein to Matosinhos | 1,275.95 mi (2,053.45 km) |
| Oldenburg in Holstein to Mealhada | 1,312.02 mi (2,111.49 km) |
| Oldenburg in Holstein to Melgaco | 1,211.67 mi (1,949.99 km) |
| Oldenburg in Holstein to Melres | 1,272.73 mi (2,048.26 km) |
| Oldenburg in Holstein to Mira | 1,318.14 mi (2,121.34 km) |
| Oldenburg in Holstein to Miranda do Corvo | 1,324.20 mi (2,131.10 km) |
| Oldenburg in Holstein to Mirandela | 1,211.41 mi (1,949.58 km) |
| Oldenburg in Holstein to Mogadouro | 1,205.53 mi (1,940.11 km) |
| Oldenburg in Holstein to Moimenta da Beira | 1,252.83 mi (2,016.24 km) |
| Oldenburg in Holstein to Moita | 1,426.18 mi (2,295.21 km) |
| Oldenburg in Holstein to Moncao | 1,220.94 mi (1,964.91 km) |
| Oldenburg in Holstein to Montalegre | 1,212.14 mi (1,950.76 km) |
