| Castelfidardo to Marco de Canavezes | 1,116.23 mi (1,796.40 km) |
| Castelfidardo to Marinha Grande | 1,185.45 mi (1,907.79 km) |
| Castelfidardo to Massama | 1,227.36 mi (1,975.25 km) |
| Castelfidardo to Matosinhos | 1,143.81 mi (1,840.79 km) |
| Castelfidardo to Mealhada | 1,147.11 mi (1,846.09 km) |
| Castelfidardo to Melgaco | 1,106.72 mi (1,781.09 km) |
| Castelfidardo to Melres | 1,130.93 mi (1,820.05 km) |
| Castelfidardo to Mira | 1,160.24 mi (1,867.22 km) |
| Castelfidardo to Miranda do Corvo | 1,147.44 mi (1,846.63 km) |
| Castelfidardo to Mirandela | 1,062.33 mi (1,709.65 km) |
| Castelfidardo to Mogadouro | 1,041.66 mi (1,676.39 km) |
| Castelfidardo to Moimenta da Beira | 1,093.15 mi (1,759.25 km) |
| Castelfidardo to Moita | 1,215.75 mi (1,956.56 km) |
| Castelfidardo to Moncao | 1,118.04 mi (1,799.31 km) |
| Castelfidardo to Montalegre | 1,087.37 mi (1,749.95 km) |
