| Erkrath to Marco de Canavezes | 996.49 mi (1,603.70 km) |
| Erkrath to Marinha Grande | 1,098.99 mi (1,768.66 km) |
| Erkrath to Massama | 1,164.41 mi (1,873.93 km) |
| Erkrath to Matosinhos | 1,015.34 mi (1,634.03 km) |
| Erkrath to Mealhada | 1,048.90 mi (1,688.04 km) |
| Erkrath to Melgaco | 952.70 mi (1,533.23 km) |
| Erkrath to Melres | 1,011.10 mi (1,627.20 km) |
| Erkrath to Mira | 1,055.74 mi (1,699.04 km) |
| Erkrath to Miranda do Corvo | 1,060.27 mi (1,706.33 km) |
| Erkrath to Mirandela | 948.03 mi (1,525.71 km) |
| Erkrath to Mogadouro | 940.84 mi (1,514.14 km) |
| Erkrath to Moimenta da Beira | 989.24 mi (1,592.03 km) |
| Erkrath to Moita | 1,160.92 mi (1,868.33 km) |
| Erkrath to Moncao | 962.42 mi (1,548.86 km) |
| Erkrath to Montalegre | 951.06 mi (1,530.59 km) |
