| Saarlouis to Marco de Canavezes | 914.35 mi (1,471.50 km) |
| Saarlouis to Marinha Grande | 1,013.08 mi (1,630.39 km) |
| Saarlouis to Massama | 1,075.67 mi (1,731.12 km) |
| Saarlouis to Matosinhos | 935.43 mi (1,505.42 km) |
| Saarlouis to Mealhada | 963.98 mi (1,551.38 km) |
| Saarlouis to Melgaco | 876.28 mi (1,410.23 km) |
| Saarlouis to Melres | 929.36 mi (1,495.66 km) |
| Saarlouis to Mira | 972.18 mi (1,564.57 km) |
| Saarlouis to Miranda do Corvo | 973.58 mi (1,566.83 km) |
| Saarlouis to Mirandela | 863.45 mi (1,389.58 km) |
| Saarlouis to Mogadouro | 853.47 mi (1,373.53 km) |
| Saarlouis to Moimenta da Beira | 903.85 mi (1,454.60 km) |
| Saarlouis to Moita | 1,070.70 mi (1,723.13 km) |
| Saarlouis to Moncao | 886.61 mi (1,426.86 km) |
| Saarlouis to Montalegre | 870.93 mi (1,401.62 km) |
