| Rotterdam to Marco de Canavezes | 951.80 mi (1,531.77 km) |
| Rotterdam to Marinha Grande | 1,057.03 mi (1,701.12 km) |
| Rotterdam to Massama | 1,124.82 mi (1,810.22 km) |
| Rotterdam to Matosinhos | 968.23 mi (1,558.21 km) |
| Rotterdam to Mealhada | 1,006.42 mi (1,619.67 km) |
| Rotterdam to Melgaco | 903.01 mi (1,453.26 km) |
| Rotterdam to Melres | 965.82 mi (1,554.34 km) |
| Rotterdam to Mira | 1,011.80 mi (1,628.33 km) |
| Rotterdam to Miranda do Corvo | 1,019.50 mi (1,640.72 km) |
| Rotterdam to Mirandela | 906.42 mi (1,458.73 km) |
| Rotterdam to Mogadouro | 902.22 mi (1,451.99 km) |
| Rotterdam to Moimenta da Beira | 947.93 mi (1,525.55 km) |
| Rotterdam to Moita | 1,122.97 mi (1,807.25 km) |
| Rotterdam to Moncao | 912.01 mi (1,467.74 km) |
| Rotterdam to Montalegre | 904.95 mi (1,456.37 km) |
