| Orsova to Mangualde | 1,549.16 mi (2,493.14 km) |
| Orsova to Marco de Canavezes | 1,554.58 mi (2,501.85 km) |
| Orsova to Marinha Grande | 1,628.41 mi (2,620.67 km) |
| Orsova to Massama | 1,672.55 mi (2,691.70 km) |
| Orsova to Matosinhos | 1,581.56 mi (2,545.28 km) |
| Orsova to Mealhada | 1,588.42 mi (2,556.32 km) |
| Orsova to Melgaco | 1,540.08 mi (2,478.52 km) |
| Orsova to Melres | 1,569.53 mi (2,525.91 km) |
| Orsova to Mira | 1,601.09 mi (2,576.70 km) |
| Orsova to Miranda do Corvo | 1,589.85 mi (2,558.62 km) |
| Orsova to Mirandela | 1,500.29 mi (2,414.48 km) |
| Orsova to Mogadouro | 1,480.84 mi (2,383.19 km) |
| Orsova to Moimenta da Beira | 1,532.96 mi (2,467.06 km) |
| Orsova to Moita | 1,661.34 mi (2,673.67 km) |
| Orsova to Moncao | 1,551.41 mi (2,496.76 km) |
