| Shildon to Mangualde | 1,009.07 mi (1,623.95 km) |
| Shildon to Marco de Canavezes | 975.61 mi (1,570.09 km) |
| Shildon to Marinha Grande | 1,082.08 mi (1,741.44 km) |
| Shildon to Massama | 1,153.09 mi (1,855.72 km) |
| Shildon to Matosinhos | 983.58 mi (1,582.92 km) |
| Shildon to Mealhada | 1,033.07 mi (1,662.56 km) |
| Shildon to Melgaco | 915.37 mi (1,473.15 km) |
| Shildon to Melres | 986.90 mi (1,588.27 km) |
| Shildon to Mira | 1,033.78 mi (1,663.71 km) |
| Shildon to Miranda do Corvo | 1,050.35 mi (1,690.38 km) |
| Shildon to Mirandela | 942.72 mi (1,517.16 km) |
| Shildon to Mogadouro | 947.50 mi (1,524.86 km) |
| Shildon to Moimenta da Beira | 982.03 mi (1,580.43 km) |
| Shildon to Moita | 1,156.09 mi (1,860.55 km) |
| Shildon to Moncao | 921.46 mi (1,482.95 km) |
