| Sint-Martens-Lennik to Marco de Canavezes | 886.55 mi (1,426.76 km) |
| Sint-Martens-Lennik to Marinha Grande | 990.74 mi (1,594.45 km) |
| Sint-Martens-Lennik to Massama | 1,057.64 mi (1,702.11 km) |
| Sint-Martens-Lennik to Matosinhos | 904.10 mi (1,455.01 km) |
| Sint-Martens-Lennik to Mealhada | 940.29 mi (1,513.24 km) |
| Sint-Martens-Lennik to Melgaco | 840.01 mi (1,351.87 km) |
| Sint-Martens-Lennik to Melres | 900.85 mi (1,449.78 km) |
| Sint-Martens-Lennik to Mira | 946.30 mi (1,522.92 km) |
| Sint-Martens-Lennik to Miranda do Corvo | 952.67 mi (1,533.17 km) |
| Sint-Martens-Lennik to Mirandela | 839.77 mi (1,351.49 km) |
| Sint-Martens-Lennik to Mogadouro | 834.36 mi (1,342.78 km) |
| Sint-Martens-Lennik to Moimenta da Beira | 881.23 mi (1,418.20 km) |
| Sint-Martens-Lennik to Moita | 1,055.15 mi (1,698.09 km) |
| Sint-Martens-Lennik to Moncao | 849.37 mi (1,366.94 km) |
| Sint-Martens-Lennik to Montalegre | 840.26 mi (1,352.27 km) |
