| Dun Dealgan to Marco de Canavezes | 889.82 mi (1,432.03 km) |
| Dun Dealgan to Marinha Grande | 992.25 mi (1,596.87 km) |
| Dun Dealgan to Massama | 1,062.44 mi (1,709.83 km) |
| Dun Dealgan to Matosinhos | 892.47 mi (1,436.30 km) |
| Dun Dealgan to Mealhada | 946.22 mi (1,522.80 km) |
| Dun Dealgan to Melgaco | 826.09 mi (1,329.46 km) |
| Dun Dealgan to Melres | 898.96 mi (1,446.74 km) |
| Dun Dealgan to Mira | 944.20 mi (1,519.54 km) |
| Dun Dealgan to Miranda do Corvo | 965.20 mi (1,553.34 km) |
| Dun Dealgan to Mirandela | 866.04 mi (1,393.76 km) |
| Dun Dealgan to Mogadouro | 875.92 mi (1,409.66 km) |
| Dun Dealgan to Moimenta da Beira | 901.97 mi (1,451.58 km) |
| Dun Dealgan to Moita | 1,068.13 mi (1,718.98 km) |
| Dun Dealgan to Moncao | 830.13 mi (1,335.97 km) |
| Dun Dealgan to Montalegre | 844.37 mi (1,358.88 km) |
