| Viareggio to Marco de Canavezes | 953.03 mi (1,533.75 km) |
| Viareggio to Marinha Grande | 1,025.44 mi (1,650.29 km) |
| Viareggio to Massama | 1,070.00 mi (1,721.99 km) |
| Viareggio to Matosinhos | 980.34 mi (1,577.70 km) |
| Viareggio to Mealhada | 985.72 mi (1,586.37 km) |
| Viareggio to Melgaco | 941.60 mi (1,515.35 km) |
| Viareggio to Melres | 967.86 mi (1,557.63 km) |
| Viareggio to Mira | 998.53 mi (1,606.97 km) |
| Viareggio to Miranda do Corvo | 986.93 mi (1,588.31 km) |
| Viareggio to Mirandela | 898.90 mi (1,446.64 km) |
| Viareggio to Mogadouro | 878.86 mi (1,414.38 km) |
| Viareggio to Moimenta da Beira | 930.74 mi (1,497.88 km) |
| Viareggio to Moita | 1,059.05 mi (1,704.38 km) |
| Viareggio to Moncao | 952.93 mi (1,533.60 km) |
| Viareggio to Montalegre | 922.94 mi (1,485.33 km) |
