| Harlau to Mangualde | 1,769.96 mi (2,848.47 km) |
| Harlau to Marco de Canavezes | 1,770.24 mi (2,848.92 km) |
| Harlau to Marinha Grande | 1,852.23 mi (2,980.88 km) |
| Harlau to Massama | 1,901.82 mi (3,060.68 km) |
| Harlau to Matosinhos | 1,795.94 mi (2,890.29 km) |
| Harlau to Mealhada | 1,809.12 mi (2,911.50 km) |
| Harlau to Melgaco | 1,748.31 mi (2,813.64 km) |
| Harlau to Melres | 1,785.47 mi (2,873.43 km) |
| Harlau to Mira | 1,820.76 mi (2,930.24 km) |
| Harlau to Miranda do Corvo | 1,812.78 mi (2,917.39 km) |
| Harlau to Mirandela | 1,715.92 mi (2,761.51 km) |
| Harlau to Mogadouro | 1,698.74 mi (2,733.85 km) |
| Harlau to Moimenta da Beira | 1,751.39 mi (2,818.58 km) |
| Harlau to Moita | 1,891.97 mi (3,044.84 km) |
| Harlau to Moncao | 1,759.51 mi (2,831.66 km) |
