| Tallaght to Marco de Canavezes | 840.54 mi (1,352.72 km) |
| Tallaght to Marinha Grande | 943.25 mi (1,518.01 km) |
| Tallaght to Massama | 1,013.54 mi (1,631.13 km) |
| Tallaght to Matosinhos | 843.46 mi (1,357.43 km) |
| Tallaght to Mealhada | 897.04 mi (1,443.64 km) |
| Tallaght to Melgaco | 776.92 mi (1,250.33 km) |
| Tallaght to Melres | 849.79 mi (1,367.61 km) |
| Tallaght to Mira | 895.15 mi (1,440.60 km) |
| Tallaght to Miranda do Corvo | 915.95 mi (1,474.08 km) |
| Tallaght to Mirandela | 816.43 mi (1,313.91 km) |
| Tallaght to Mogadouro | 826.20 mi (1,329.64 km) |
| Tallaght to Moimenta da Beira | 852.47 mi (1,371.93 km) |
| Tallaght to Moita | 1,019.08 mi (1,640.05 km) |
| Tallaght to Moncao | 781.08 mi (1,257.02 km) |
| Tallaght to Montalegre | 794.96 mi (1,279.37 km) |
