| Billingham to Mangualde | 1,012.78 mi (1,629.92 km) |
| Billingham to Marco de Canavezes | 979.77 mi (1,576.79 km) |
| Billingham to Marinha Grande | 1,086.42 mi (1,748.42 km) |
| Billingham to Massama | 1,157.41 mi (1,862.67 km) |
| Billingham to Matosinhos | 988.16 mi (1,590.28 km) |
| Billingham to Mealhada | 1,037.23 mi (1,669.26 km) |
| Billingham to Melgaco | 919.92 mi (1,480.46 km) |
| Billingham to Melres | 991.22 mi (1,595.21 km) |
| Billingham to Mira | 1,038.16 mi (1,670.76 km) |
| Billingham to Miranda do Corvo | 1,054.35 mi (1,696.82 km) |
| Billingham to Mirandela | 946.21 mi (1,522.79 km) |
| Billingham to Mogadouro | 950.59 mi (1,529.82 km) |
| Billingham to Moimenta da Beira | 985.73 mi (1,586.37 km) |
| Billingham to Moita | 1,160.19 mi (1,867.15 km) |
| Billingham to Moncao | 926.16 mi (1,490.50 km) |
