| Attendorn to Marco de Canavezes | 1,026.14 mi (1,651.40 km) |
| Attendorn to Marinha Grande | 1,127.62 mi (1,814.73 km) |
| Attendorn to Massama | 1,192.21 mi (1,918.67 km) |
| Attendorn to Matosinhos | 1,045.64 mi (1,682.80 km) |
| Attendorn to Mealhada | 1,077.78 mi (1,734.53 km) |
| Attendorn to Melgaco | 983.87 mi (1,583.39 km) |
| Attendorn to Melres | 1,040.88 mi (1,675.13 km) |
| Attendorn to Mira | 1,085.03 mi (1,746.19 km) |
| Attendorn to Miranda do Corvo | 1,088.62 mi (1,751.96 km) |
| Attendorn to Mirandela | 976.89 mi (1,572.16 km) |
| Attendorn to Mogadouro | 968.84 mi (1,559.19 km) |
| Attendorn to Moimenta da Beira | 1,017.91 mi (1,638.17 km) |
| Attendorn to Moita | 1,188.23 mi (1,912.28 km) |
| Attendorn to Moncao | 993.76 mi (1,599.31 km) |
| Attendorn to Montalegre | 981.22 mi (1,579.12 km) |
