| Formello to Marco de Canavezes | 1,060.49 mi (1,706.69 km) |
| Formello to Marinha Grande | 1,122.45 mi (1,806.40 km) |
| Formello to Massama | 1,159.74 mi (1,866.42 km) |
| Formello to Matosinhos | 1,088.63 mi (1,751.98 km) |
| Formello to Mealhada | 1,086.99 mi (1,749.35 km) |
| Formello to Melgaco | 1,056.89 mi (1,700.91 km) |
| Formello to Melres | 1,074.74 mi (1,729.63 km) |
| Formello to Mira | 1,100.74 mi (1,771.47 km) |
| Formello to Miranda do Corvo | 1,085.59 mi (1,747.08 km) |
| Formello to Mirandela | 1,007.49 mi (1,621.40 km) |
| Formello to Mogadouro | 985.36 mi (1,585.79 km) |
| Formello to Moimenta da Beira | 1,035.59 mi (1,666.61 km) |
| Formello to Moita | 1,147.18 mi (1,846.22 km) |
| Formello to Moncao | 1,068.11 mi (1,718.96 km) |
| Formello to Montalegre | 1,035.27 mi (1,666.11 km) |
