| Trebur to Marco de Canavezes | 999.60 mi (1,608.69 km) |
| Trebur to Marinha Grande | 1,098.12 mi (1,767.25 km) |
| Trebur to Massama | 1,160.46 mi (1,867.57 km) |
| Trebur to Matosinhos | 1,020.72 mi (1,642.69 km) |
| Trebur to Mealhada | 1,049.10 mi (1,688.37 km) |
| Trebur to Melgaco | 961.57 mi (1,547.49 km) |
| Trebur to Melres | 1,014.62 mi (1,632.87 km) |
| Trebur to Mira | 1,057.36 mi (1,701.66 km) |
| Trebur to Miranda do Corvo | 1,058.58 mi (1,703.63 km) |
| Trebur to Mirandela | 948.61 mi (1,526.64 km) |
| Trebur to Mogadouro | 938.47 mi (1,510.33 km) |
| Trebur to Moimenta da Beira | 988.96 mi (1,591.58 km) |
| Trebur to Moita | 1,155.34 mi (1,859.34 km) |
| Trebur to Moncao | 971.89 mi (1,564.11 km) |
| Trebur to Montalegre | 956.22 mi (1,538.89 km) |
