| Kalkar to Marco de Canavezes | 998.65 mi (1,607.18 km) |
| Kalkar to Marinha Grande | 1,102.41 mi (1,774.16 km) |
| Kalkar to Massama | 1,168.87 mi (1,881.12 km) |
| Kalkar to Matosinhos | 1,016.52 mi (1,635.94 km) |
| Kalkar to Mealhada | 1,052.04 mi (1,693.10 km) |
| Kalkar to Melgaco | 952.71 mi (1,533.24 km) |
| Kalkar to Melres | 1,013.04 mi (1,630.33 km) |
| Kalkar to Mira | 1,058.29 mi (1,703.16 km) |
| Kalkar to Miranda do Corvo | 1,064.13 mi (1,712.55 km) |
| Kalkar to Mirandela | 951.39 mi (1,531.11 km) |
| Kalkar to Mogadouro | 945.40 mi (1,521.47 km) |
| Kalkar to Moimenta da Beira | 992.79 mi (1,597.73 km) |
| Kalkar to Moita | 1,166.05 mi (1,876.57 km) |
| Kalkar to Moncao | 962.14 mi (1,548.41 km) |
| Kalkar to Montalegre | 952.57 mi (1,533.01 km) |
