| Orsova to Montalegre | 1,522.91 mi (2,450.89 km) |
| Orsova to Montemor-o-Novo | 1,623.79 mi (2,613.24 km) |
| Orsova to Montemor-o-Velho | 1,605.33 mi (2,583.53 km) |
| Orsova to Montijo | 1,656.30 mi (2,665.55 km) |
| Orsova to Mortagua | 1,576.54 mi (2,537.20 km) |
| Orsova to Moura | 1,601.66 mi (2,577.62 km) |
| Orsova to Murtosa | 1,588.85 mi (2,557.01 km) |
| Orsova to Nazare | 1,638.95 mi (2,637.63 km) |
| Orsova to Nelas | 1,555.67 mi (2,503.61 km) |
| Orsova to Obidos | 1,649.97 mi (2,655.36 km) |
| Orsova to Odemira | 1,676.38 mi (2,697.88 km) |
| Orsova to Odivelas | 1,666.93 mi (2,682.66 km) |
| Orsova to Oeiras | 1,676.71 mi (2,698.41 km) |
| Orsova to Olhao | 1,655.63 mi (2,664.49 km) |
| Orsova to Oliveira de Azemeis | 1,578.53 mi (2,540.40 km) |
