| Cadca to Mangualde | 1,423.26 mi (2,290.51 km) |
| Cadca to Marco de Canavezes | 1,418.07 mi (2,282.16 km) |
| Cadca to Marinha Grande | 1,507.78 mi (2,426.53 km) |
| Cadca to Massama | 1,563.22 mi (2,515.77 km) |
| Cadca to Matosinhos | 1,442.14 mi (2,320.90 km) |
| Cadca to Mealhada | 1,461.75 mi (2,352.46 km) |
| Cadca to Melgaco | 1,389.28 mi (2,235.83 km) |
| Cadca to Melres | 1,433.37 mi (2,306.79 km) |
| Cadca to Mira | 1,472.11 mi (2,369.14 km) |
| Cadca to Miranda do Corvo | 1,467.86 mi (2,362.28 km) |
| Cadca to Mirandela | 1,364.52 mi (2,195.99 km) |
| Cadca to Mogadouro | 1,349.97 mi (2,172.57 km) |
| Cadca to Moimenta da Beira | 1,402.38 mi (2,256.91 km) |
| Cadca to Moita | 1,555.24 mi (2,502.92 km) |
| Cadca to Moncao | 1,400.22 mi (2,253.43 km) |
