| Montesilvano to Marco de Canavezes | 1,148.06 mi (1,847.63 km) |
| Montesilvano to Marinha Grande | 1,212.45 mi (1,951.25 km) |
| Montesilvano to Massama | 1,251.06 mi (2,013.38 km) |
| Montesilvano to Matosinhos | 1,176.03 mi (1,892.64 km) |
| Montesilvano to Mealhada | 1,176.07 mi (1,892.70 km) |
| Montesilvano to Melgaco | 1,142.25 mi (1,838.27 km) |
| Montesilvano to Melres | 1,162.48 mi (1,870.84 km) |
| Montesilvano to Mira | 1,189.63 mi (1,914.53 km) |
| Montesilvano to Miranda do Corvo | 1,175.21 mi (1,891.32 km) |
| Montesilvano to Mirandela | 1,094.69 mi (1,761.73 km) |
| Montesilvano to Mogadouro | 1,073.06 mi (1,726.92 km) |
| Montesilvano to Moimenta da Beira | 1,123.77 mi (1,808.53 km) |
| Montesilvano to Moita | 1,238.74 mi (1,993.55 km) |
| Montesilvano to Moncao | 1,153.52 mi (1,856.41 km) |
| Montesilvano to Montalegre | 1,121.48 mi (1,804.85 km) |
