| Ub to Mangualde | 1,434.41 mi (2,308.46 km) |
| Ub to Marco de Canavezes | 1,440.43 mi (2,318.14 km) |
| Ub to Marinha Grande | 1,513.29 mi (2,435.40 km) |
| Ub to Massama | 1,556.93 mi (2,505.64 km) |
| Ub to Matosinhos | 1,467.55 mi (2,361.79 km) |
| Ub to Mealhada | 1,473.65 mi (2,371.61 km) |
| Ub to Melgaco | 1,426.98 mi (2,296.51 km) |
| Ub to Melres | 1,455.33 mi (2,342.13 km) |
| Ub to Mira | 1,486.42 mi (2,392.16 km) |
| Ub to Miranda do Corvo | 1,474.84 mi (2,373.53 km) |
| Ub to Mirandela | 1,386.20 mi (2,230.87 km) |
| Ub to Mogadouro | 1,366.49 mi (2,199.15 km) |
| Ub to Moimenta da Beira | 1,418.49 mi (2,282.84 km) |
| Ub to Moita | 1,545.63 mi (2,487.45 km) |
| Ub to Moncao | 1,438.32 mi (2,314.75 km) |
