| Whitley Bay to Mangualde | 1,038.90 mi (1,671.94 km) |
| Whitley Bay to Marco de Canavezes | 1,005.37 mi (1,617.99 km) |
| Whitley Bay to Marinha Grande | 1,111.82 mi (1,789.29 km) |
| Whitley Bay to Massama | 1,182.83 mi (1,903.57 km) |
| Whitley Bay to Matosinhos | 1,013.27 mi (1,630.70 km) |
| Whitley Bay to Mealhada | 1,062.83 mi (1,710.46 km) |
| Whitley Bay to Melgaco | 945.07 mi (1,520.95 km) |
| Whitley Bay to Melres | 1,016.64 mi (1,636.12 km) |
| Whitley Bay to Mira | 1,063.51 mi (1,711.55 km) |
| Whitley Bay to Miranda do Corvo | 1,080.14 mi (1,738.32 km) |
| Whitley Bay to Mirandela | 972.56 mi (1,565.19 km) |
| Whitley Bay to Mogadouro | 977.36 mi (1,572.91 km) |
| Whitley Bay to Moimenta da Beira | 1,011.85 mi (1,628.42 km) |
| Whitley Bay to Moita | 1,185.86 mi (1,908.47 km) |
| Whitley Bay to Moncao | 951.13 mi (1,530.69 km) |
