| Herstal to Marco de Canavezes | 928.90 mi (1,494.93 km) |
| Herstal to Marinha Grande | 1,031.59 mi (1,660.19 km) |
| Herstal to Massama | 1,097.21 mi (1,765.79 km) |
| Herstal to Matosinhos | 947.66 mi (1,525.11 km) |
| Herstal to Mealhada | 981.45 mi (1,579.49 km) |
| Herstal to Melgaco | 884.95 mi (1,424.18 km) |
| Herstal to Melres | 943.49 mi (1,518.39 km) |
| Herstal to Mira | 988.20 mi (1,590.36 km) |
| Herstal to Miranda do Corvo | 992.94 mi (1,597.98 km) |
| Herstal to Mirandela | 880.60 mi (1,417.20 km) |
| Herstal to Mogadouro | 873.63 mi (1,405.98 km) |
| Herstal to Moimenta da Beira | 921.85 mi (1,483.58 km) |
| Herstal to Moita | 1,093.87 mi (1,760.42 km) |
| Herstal to Moncao | 894.65 mi (1,439.80 km) |
| Herstal to Montalegre | 883.40 mi (1,421.69 km) |
