| Cassino to Marco de Canavezes | 1,137.50 mi (1,830.62 km) |
| Cassino to Marinha Grande | 1,196.52 mi (1,925.61 km) |
| Cassino to Massama | 1,231.61 mi (1,982.09 km) |
| Cassino to Matosinhos | 1,165.78 mi (1,876.15 km) |
| Cassino to Mealhada | 1,162.33 mi (1,870.59 km) |
| Cassino to Melgaco | 1,135.79 mi (1,827.87 km) |
| Cassino to Melres | 1,151.57 mi (1,853.27 km) |
| Cassino to Mira | 1,176.30 mi (1,893.07 km) |
| Cassino to Miranda do Corvo | 1,160.22 mi (1,867.19 km) |
| Cassino to Mirandela | 1,084.91 mi (1,745.99 km) |
| Cassino to Mogadouro | 1,062.33 mi (1,709.66 km) |
| Cassino to Moimenta da Beira | 1,112.00 mi (1,789.59 km) |
| Cassino to Moita | 1,218.62 mi (1,961.17 km) |
| Cassino to Moncao | 1,146.96 mi (1,845.85 km) |
| Cassino to Montalegre | 1,113.52 mi (1,792.04 km) |
