| Hebburn to Mangualde | 1,033.21 mi (1,662.79 km) |
| Hebburn to Marco de Canavezes | 999.66 mi (1,608.79 km) |
| Hebburn to Marinha Grande | 1,106.09 mi (1,780.08 km) |
| Hebburn to Massama | 1,177.10 mi (1,894.36 km) |
| Hebburn to Matosinhos | 1,007.53 mi (1,621.47 km) |
| Hebburn to Mealhada | 1,057.11 mi (1,701.26 km) |
| Hebburn to Melgaco | 939.34 mi (1,511.72 km) |
| Hebburn to Melres | 1,010.92 mi (1,626.91 km) |
| Hebburn to Mira | 1,057.78 mi (1,702.33 km) |
| Hebburn to Miranda do Corvo | 1,074.43 mi (1,729.13 km) |
| Hebburn to Mirandela | 966.89 mi (1,556.05 km) |
| Hebburn to Mogadouro | 971.72 mi (1,563.83 km) |
| Hebburn to Moimenta da Beira | 1,006.17 mi (1,619.27 km) |
| Hebburn to Moita | 1,180.15 mi (1,899.27 km) |
| Hebburn to Moncao | 945.39 mi (1,521.45 km) |
