| Ottweiler to Marco de Canavezes | 932.10 mi (1,500.06 km) |
| Ottweiler to Marinha Grande | 1,030.50 mi (1,658.44 km) |
| Ottweiler to Massama | 1,092.83 mi (1,758.75 km) |
| Ottweiler to Matosinhos | 953.32 mi (1,534.22 km) |
| Ottweiler to Mealhada | 981.51 mi (1,579.59 km) |
| Ottweiler to Melgaco | 894.40 mi (1,439.40 km) |
| Ottweiler to Melres | 947.13 mi (1,524.26 km) |
| Ottweiler to Mira | 989.80 mi (1,592.93 km) |
| Ottweiler to Miranda do Corvo | 990.96 mi (1,594.80 km) |
| Ottweiler to Mirandela | 881.04 mi (1,417.90 km) |
| Ottweiler to Mogadouro | 870.85 mi (1,401.50 km) |
| Ottweiler to Moimenta da Beira | 921.36 mi (1,482.79 km) |
| Ottweiler to Moita | 1,087.74 mi (1,750.54 km) |
| Ottweiler to Moncao | 904.77 mi (1,456.09 km) |
| Ottweiler to Montalegre | 888.83 mi (1,430.44 km) |
