| Merzenich to Marco de Canavezes | 966.27 mi (1,555.06 km) |
| Merzenich to Marinha Grande | 1,068.43 mi (1,719.48 km) |
| Merzenich to Massama | 1,133.60 mi (1,824.35 km) |
| Merzenich to Matosinhos | 985.37 mi (1,585.81 km) |
| Merzenich to Mealhada | 1,018.42 mi (1,638.99 km) |
| Merzenich to Melgaco | 923.09 mi (1,485.57 km) |
| Merzenich to Melres | 980.93 mi (1,578.65 km) |
| Merzenich to Mira | 1,025.40 mi (1,650.22 km) |
| Merzenich to Miranda do Corvo | 1,029.62 mi (1,657.01 km) |
| Merzenich to Mirandela | 917.53 mi (1,476.63 km) |
| Merzenich to Mogadouro | 910.07 mi (1,464.61 km) |
| Merzenich to Moimenta da Beira | 958.69 mi (1,542.86 km) |
| Merzenich to Moita | 1,129.98 mi (1,818.52 km) |
| Merzenich to Moncao | 932.88 mi (1,501.33 km) |
| Merzenich to Montalegre | 921.03 mi (1,482.25 km) |
