| Monfalcone to Marco de Canavezes | 1,128.71 mi (1,816.49 km) |
| Monfalcone to Marinha Grande | 1,208.72 mi (1,945.24 km) |
| Monfalcone to Massama | 1,257.85 mi (2,024.31 km) |
| Monfalcone to Matosinhos | 1,154.92 mi (1,858.67 km) |
| Monfalcone to Mealhada | 1,166.18 mi (1,876.78 km) |
| Monfalcone to Melgaco | 1,109.94 mi (1,786.28 km) |
| Monfalcone to Melres | 1,143.87 mi (1,840.88 km) |
| Monfalcone to Mira | 1,178.09 mi (1,895.95 km) |
| Monfalcone to Miranda do Corvo | 1,169.38 mi (1,881.94 km) |
| Monfalcone to Mirandela | 1,074.32 mi (1,728.95 km) |
| Monfalcone to Mogadouro | 1,056.39 mi (1,700.09 km) |
| Monfalcone to Moimenta da Beira | 1,108.96 mi (1,784.70 km) |
| Monfalcone to Moita | 1,248.01 mi (2,008.47 km) |
| Monfalcone to Moncao | 1,121.23 mi (1,804.45 km) |
| Monfalcone to Montalegre | 1,094.53 mi (1,761.48 km) |
