| Luxembourg to Marco de Canavezes | 902.46 mi (1,452.37 km) |
| Luxembourg to Marinha Grande | 1,002.58 mi (1,613.49 km) |
| Luxembourg to Massama | 1,066.21 mi (1,715.90 km) |
| Luxembourg to Matosinhos | 922.85 mi (1,485.18 km) |
| Luxembourg to Mealhada | 953.09 mi (1,533.85 km) |
| Luxembourg to Melgaco | 862.52 mi (1,388.09 km) |
| Luxembourg to Melres | 917.36 mi (1,476.35 km) |
| Luxembourg to Mira | 960.83 mi (1,546.31 km) |
| Luxembourg to Miranda do Corvo | 963.30 mi (1,550.29 km) |
| Luxembourg to Mirandela | 852.31 mi (1,371.66 km) |
| Luxembourg to Mogadouro | 843.28 mi (1,357.13 km) |
| Luxembourg to Moimenta da Beira | 893.04 mi (1,437.21 km) |
| Luxembourg to Moita | 1,061.77 mi (1,708.76 km) |
| Luxembourg to Moncao | 872.68 mi (1,404.44 km) |
| Luxembourg to Montalegre | 858.33 mi (1,381.35 km) |
