| Tring to Mangualde | 843.61 mi (1,357.67 km) |
| Tring to Marco de Canavezes | 814.25 mi (1,310.41 km) |
| Tring to Marinha Grande | 921.50 mi (1,483.01 km) |
| Tring to Massama | 991.92 mi (1,596.34 km) |
| Tring to Matosinhos | 825.87 mi (1,329.11 km) |
| Tring to Mealhada | 871.27 mi (1,402.18 km) |
| Tring to Melgaco | 757.98 mi (1,219.85 km) |
| Tring to Melres | 826.82 mi (1,330.64 km) |
| Tring to Mira | 873.91 mi (1,406.43 km) |
| Tring to Miranda do Corvo | 887.07 mi (1,427.61 km) |
| Tring to Mirandela | 775.94 mi (1,248.76 km) |
| Tring to Mogadouro | 777.41 mi (1,251.12 km) |
| Tring to Moimenta da Beira | 816.64 mi (1,314.25 km) |
| Tring to Moita | 993.01 mi (1,598.10 km) |
| Tring to Moncao | 765.43 mi (1,231.84 km) |
