| Altopascio to Marco de Canavezes | 974.25 mi (1,567.90 km) |
| Altopascio to Marinha Grande | 1,046.18 mi (1,683.66 km) |
| Altopascio to Massama | 1,090.34 mi (1,754.73 km) |
| Altopascio to Matosinhos | 1,001.60 mi (1,611.92 km) |
| Altopascio to Mealhada | 1,006.66 mi (1,620.07 km) |
| Altopascio to Melgaco | 963.12 mi (1,549.99 km) |
| Altopascio to Melres | 989.06 mi (1,591.74 km) |
| Altopascio to Mira | 1,019.52 mi (1,640.76 km) |
| Altopascio to Miranda do Corvo | 1,007.74 mi (1,621.80 km) |
| Altopascio to Mirandela | 920.15 mi (1,480.84 km) |
| Altopascio to Mogadouro | 900.01 mi (1,448.42 km) |
| Altopascio to Moimenta da Beira | 951.83 mi (1,531.83 km) |
| Altopascio to Moita | 1,079.29 mi (1,736.95 km) |
| Altopascio to Moncao | 974.45 mi (1,568.23 km) |
| Altopascio to Montalegre | 944.35 mi (1,519.79 km) |
