| Salcea to Mangualde | 1,745.55 mi (2,809.20 km) |
| Salcea to Marco de Canavezes | 1,745.40 mi (2,808.95 km) |
| Salcea to Marinha Grande | 1,828.05 mi (2,941.97 km) |
| Salcea to Massama | 1,878.13 mi (3,022.55 km) |
| Salcea to Matosinhos | 1,770.99 mi (2,850.13 km) |
| Salcea to Mealhada | 1,784.69 mi (2,872.18 km) |
| Salcea to Melgaco | 1,722.92 mi (2,772.77 km) |
| Salcea to Melres | 1,760.65 mi (2,833.48 km) |
| Salcea to Mira | 1,796.24 mi (2,890.76 km) |
| Salcea to Miranda do Corvo | 1,788.54 mi (2,878.38 km) |
| Salcea to Mirandela | 1,691.12 mi (2,721.60 km) |
| Salcea to Mogadouro | 1,674.13 mi (2,694.25 km) |
| Salcea to Moimenta da Beira | 1,726.79 mi (2,779.00 km) |
| Salcea to Moita | 1,868.42 mi (3,006.93 km) |
| Salcea to Moncao | 1,734.10 mi (2,790.77 km) |
