| Derry to Mangualde | 994.27 mi (1,600.12 km) |
| Derry to Marco de Canavezes | 954.78 mi (1,536.57 km) |
| Derry to Marinha Grande | 1,055.66 mi (1,698.92 km) |
| Derry to Massama | 1,125.32 mi (1,811.03 km) |
| Derry to Matosinhos | 956.08 mi (1,538.66 km) |
| Derry to Mealhada | 1,010.63 mi (1,626.44 km) |
| Derry to Melgaco | 890.56 mi (1,433.22 km) |
| Derry to Melres | 963.34 mi (1,550.34 km) |
| Derry to Mira | 1,007.91 mi (1,622.08 km) |
| Derry to Miranda do Corvo | 1,029.93 mi (1,657.51 km) |
| Derry to Mirandela | 933.23 mi (1,501.89 km) |
| Derry to Mogadouro | 944.13 mi (1,519.44 km) |
| Derry to Moimenta da Beira | 968.22 mi (1,558.19 km) |
| Derry to Moita | 1,131.69 mi (1,821.27 km) |
| Derry to Moncao | 894.06 mi (1,438.85 km) |
