| Datteln to Marco de Canavezes | 1,029.36 mi (1,656.60 km) |
| Datteln to Marinha Grande | 1,132.20 mi (1,822.09 km) |
| Datteln to Massama | 1,197.86 mi (1,927.78 km) |
| Datteln to Matosinhos | 1,047.95 mi (1,686.51 km) |
| Datteln to Mealhada | 1,082.03 mi (1,741.36 km) |
| Datteln to Melgaco | 984.96 mi (1,585.14 km) |
| Datteln to Melres | 1,043.91 mi (1,680.01 km) |
| Datteln to Mira | 1,088.72 mi (1,752.12 km) |
| Datteln to Miranda do Corvo | 1,093.57 mi (1,759.93 km) |
| Datteln to Mirandela | 981.19 mi (1,579.08 km) |
| Datteln to Mogadouro | 974.29 mi (1,567.96 km) |
| Datteln to Moimenta da Beira | 1,022.46 mi (1,645.49 km) |
| Datteln to Moita | 1,194.53 mi (1,922.40 km) |
| Datteln to Moncao | 994.59 mi (1,600.64 km) |
| Datteln to Montalegre | 983.74 mi (1,583.18 km) |
