| Viadana to Marco de Canavezes | 974.95 mi (1,569.03 km) |
| Viadana to Marinha Grande | 1,052.79 mi (1,694.30 km) |
| Viadana to Massama | 1,100.85 mi (1,771.65 km) |
| Viadana to Matosinhos | 1,001.56 mi (1,611.86 km) |
| Viadana to Mealhada | 1,010.99 mi (1,627.03 km) |
| Viadana to Melgaco | 958.73 mi (1,542.92 km) |
| Viadana to Melres | 990.02 mi (1,593.29 km) |
| Viadana to Mira | 1,023.17 mi (1,646.64 km) |
| Viadana to Miranda do Corvo | 1,013.64 mi (1,631.30 km) |
| Viadana to Mirandela | 920.57 mi (1,481.52 km) |
| Viadana to Mogadouro | 901.94 mi (1,451.54 km) |
| Viadana to Moimenta da Beira | 954.37 mi (1,535.91 km) |
| Viadana to Moita | 1,090.79 mi (1,755.45 km) |
| Viadana to Moncao | 970.05 mi (1,561.15 km) |
| Viadana to Montalegre | 942.11 mi (1,516.19 km) |
