| Spennymoor to Mangualde | 1,014.43 mi (1,632.56 km) |
| Spennymoor to Marco de Canavezes | 980.98 mi (1,578.73 km) |
| Spennymoor to Marinha Grande | 1,087.46 mi (1,750.10 km) |
| Spennymoor to Massama | 1,158.47 mi (1,864.37 km) |
| Spennymoor to Matosinhos | 988.97 mi (1,591.59 km) |
| Spennymoor to Mealhada | 1,038.44 mi (1,671.20 km) |
| Spennymoor to Melgaco | 920.76 mi (1,481.81 km) |
| Spennymoor to Melres | 992.28 mi (1,596.92 km) |
| Spennymoor to Mira | 1,039.16 mi (1,672.37 km) |
| Spennymoor to Miranda do Corvo | 1,055.72 mi (1,699.01 km) |
| Spennymoor to Mirandela | 948.06 mi (1,525.76 km) |
| Spennymoor to Mogadouro | 952.82 mi (1,533.41 km) |
| Spennymoor to Moimenta da Beira | 987.38 mi (1,589.04 km) |
| Spennymoor to Moita | 1,161.46 mi (1,869.19 km) |
| Spennymoor to Moncao | 926.85 mi (1,491.62 km) |
