| Selargius to Marco de Canavezes | 921.39 mi (1,482.84 km) |
| Selargius to Marinha Grande | 963.60 mi (1,550.77 km) |
| Selargius to Massama | 988.71 mi (1,591.18 km) |
| Selargius to Matosinhos | 949.97 mi (1,528.82 km) |
| Selargius to Mealhada | 936.27 mi (1,506.78 km) |
| Selargius to Melgaco | 932.49 mi (1,500.70 km) |
| Selargius to Melres | 934.07 mi (1,503.24 km) |
| Selargius to Mira | 951.12 mi (1,530.68 km) |
| Selargius to Miranda do Corvo | 930.63 mi (1,497.70 km) |
| Selargius to Mirandela | 872.60 mi (1,404.32 km) |
| Selargius to Mogadouro | 847.74 mi (1,364.30 km) |
| Selargius to Moimenta da Beira | 892.89 mi (1,436.97 km) |
| Selargius to Moita | 974.17 mi (1,567.78 km) |
| Selargius to Moncao | 943.04 mi (1,517.68 km) |
| Selargius to Montalegre | 906.09 mi (1,458.21 km) |
