| Certaldo to Marco de Canavezes | 990.94 mi (1,594.76 km) |
| Certaldo to Marinha Grande | 1,061.25 mi (1,707.91 km) |
| Certaldo to Massama | 1,104.28 mi (1,777.17 km) |
| Certaldo to Matosinhos | 1,018.45 mi (1,639.04 km) |
| Certaldo to Mealhada | 1,022.38 mi (1,645.37 km) |
| Certaldo to Melgaco | 981.07 mi (1,578.88 km) |
| Certaldo to Melres | 1,005.67 mi (1,618.47 km) |
| Certaldo to Mira | 1,035.40 mi (1,666.32 km) |
| Certaldo to Miranda do Corvo | 1,023.04 mi (1,646.42 km) |
| Certaldo to Mirandela | 936.97 mi (1,507.91 km) |
| Certaldo to Mogadouro | 916.47 mi (1,474.91 km) |
| Certaldo to Moimenta da Beira | 968.08 mi (1,557.97 km) |
| Certaldo to Moita | 1,092.97 mi (1,758.96 km) |
| Certaldo to Moncao | 992.39 mi (1,597.10 km) |
| Certaldo to Montalegre | 961.80 mi (1,547.87 km) |
