| Monistrol-sur-Loire to Marco de Canavezes | 681.19 mi (1,096.26 km) |
| Monistrol-sur-Loire to Marinha Grande | 768.07 mi (1,236.09 km) |
| Monistrol-sur-Loire to Massama | 823.11 mi (1,324.67 km) |
| Monistrol-sur-Loire to Matosinhos | 706.35 mi (1,136.77 km) |
| Monistrol-sur-Loire to Mealhada | 722.74 mi (1,163.14 km) |
| Monistrol-sur-Loire to Melgaco | 658.08 mi (1,059.08 km) |
| Monistrol-sur-Loire to Melres | 696.47 mi (1,120.86 km) |
| Monistrol-sur-Loire to Mira | 733.58 mi (1,180.59 km) |
| Monistrol-sur-Loire to Miranda do Corvo | 728.20 mi (1,171.92 km) |
| Monistrol-sur-Loire to Mirandela | 627.10 mi (1,009.22 km) |
| Monistrol-sur-Loire to Mogadouro | 611.26 mi (983.73 km) |
| Monistrol-sur-Loire to Moimenta da Beira | 663.87 mi (1,068.39 km) |
| Monistrol-sur-Loire to Moita | 815.28 mi (1,312.06 km) |
| Monistrol-sur-Loire to Moncao | 669.30 mi (1,077.13 km) |
| Monistrol-sur-Loire to Montalegre | 644.42 mi (1,037.10 km) |
