| Cassa de la Selva to Mangualde | 559.21 mi (899.96 km) |
| Cassa de la Selva to Marco de Canavezes | 571.84 mi (920.29 km) |
| Cassa de la Selva to Marinha Grande | 634.27 mi (1,020.76 km) |
| Cassa de la Selva to Massama | 674.87 mi (1,086.10 km) |
| Cassa de la Selva to Matosinhos | 600.13 mi (965.81 km) |
| Cassa de la Selva to Mealhada | 597.93 mi (962.28 km) |
| Cassa de la Selva to Melgaco | 571.83 mi (920.27 km) |
| Cassa de la Selva to Melres | 585.95 mi (942.99 km) |
| Cassa de la Selva to Mira | 611.62 mi (984.31 km) |
| Cassa de la Selva to Miranda do Corvo | 596.93 mi (960.67 km) |
| Cassa de la Selva to Mirandela | 519.32 mi (835.76 km) |
| Cassa de la Selva to Mogadouro | 496.68 mi (799.33 km) |
| Cassa de la Selva to Moimenta da Beira | 546.54 mi (879.58 km) |
| Cassa de la Selva to Moita | 663.29 mi (1,067.46 km) |
| Cassa de la Selva to Moncao | 582.88 mi (938.05 km) |
