| Oldbury to Mangualde | 865.70 mi (1,393.21 km) |
| Oldbury to Marco de Canavezes | 833.49 mi (1,341.37 km) |
| Oldbury to Marinha Grande | 940.42 mi (1,513.46 km) |
| Oldbury to Massama | 1,011.33 mi (1,627.58 km) |
| Oldbury to Matosinhos | 842.74 mi (1,356.25 km) |
| Oldbury to Mealhada | 890.91 mi (1,433.78 km) |
| Oldbury to Melgaco | 774.48 mi (1,246.41 km) |
| Oldbury to Melres | 845.24 mi (1,360.28 km) |
| Oldbury to Mira | 892.28 mi (1,435.99 km) |
| Oldbury to Miranda do Corvo | 907.73 mi (1,460.86 km) |
| Oldbury to Mirandela | 798.84 mi (1,285.60 km) |
| Oldbury to Mogadouro | 802.70 mi (1,291.81 km) |
| Oldbury to Moimenta da Beira | 838.63 mi (1,349.65 km) |
| Oldbury to Moita | 1,013.69 mi (1,631.38 km) |
| Oldbury to Moncao | 781.07 mi (1,257.01 km) |
