| Trecastagni to Marco de Canavezes | 1,260.70 mi (2,028.90 km) |
| Trecastagni to Marinha Grande | 1,299.76 mi (2,091.76 km) |
| Trecastagni to Massama | 1,321.26 mi (2,126.37 km) |
| Trecastagni to Matosinhos | 1,289.25 mi (2,074.84 km) |
| Trecastagni to Mealhada | 1,274.14 mi (2,050.53 km) |
| Trecastagni to Melgaco | 1,272.32 mi (2,047.61 km) |
| Trecastagni to Melres | 1,273.21 mi (2,049.04 km) |
| Trecastagni to Mira | 1,289.10 mi (2,074.61 km) |
| Trecastagni to Miranda do Corvo | 1,267.77 mi (2,040.28 km) |
| Trecastagni to Mirandela | 1,212.26 mi (1,950.95 km) |
| Trecastagni to Mogadouro | 1,187.29 mi (1,910.76 km) |
| Trecastagni to Moimenta da Beira | 1,231.95 mi (1,982.62 km) |
| Trecastagni to Moita | 1,306.15 mi (2,102.04 km) |
| Trecastagni to Moncao | 1,282.87 mi (2,064.59 km) |
| Trecastagni to Montalegre | 1,245.90 mi (2,005.08 km) |
