| Darlington to Mangualde | 1,003.61 mi (1,615.15 km) |
| Darlington to Marco de Canavezes | 970.33 mi (1,561.59 km) |
| Darlington to Marinha Grande | 1,076.88 mi (1,733.06 km) |
| Darlington to Massama | 1,147.88 mi (1,847.33 km) |
| Darlington to Matosinhos | 978.48 mi (1,574.70 km) |
| Darlington to Mealhada | 1,027.78 mi (1,654.06 km) |
| Darlington to Melgaco | 910.25 mi (1,464.91 km) |
| Darlington to Melres | 981.68 mi (1,579.87 km) |
| Darlington to Mira | 1,028.59 mi (1,655.36 km) |
| Darlington to Miranda do Corvo | 1,045.00 mi (1,681.77 km) |
| Darlington to Mirandela | 937.16 mi (1,508.22 km) |
| Darlington to Mogadouro | 941.78 mi (1,515.65 km) |
| Darlington to Moimenta da Beira | 976.56 mi (1,571.61 km) |
| Darlington to Moita | 1,150.79 mi (1,852.01 km) |
| Darlington to Moncao | 916.41 mi (1,474.81 km) |
