| Portimao to Nowy Dwor Mazowiecki | 1,761.91 mi (2,835.53 km) |
| Portimao to Nowy Sacz | 1,687.04 mi (2,715.02 km) |
| Portimao to Nowy Targ | 1,654.65 mi (2,662.91 km) |
| Portimao to Nowy Tomysl | 1,587.94 mi (2,555.54 km) |
| Portimao to Nysa | 1,572.04 mi (2,529.95 km) |
| Portimao to Oborniki | 1,624.48 mi (2,614.35 km) |
| Portimao to Oborniki Slaskie | 1,581.31 mi (2,544.87 km) |
| Portimao to Olawa | 1,584.91 mi (2,550.67 km) |
| Portimao to Olecko | 1,876.05 mi (3,019.21 km) |
| Portimao to Olesnica | 1,596.54 mi (2,569.39 km) |
| Portimao to Olesno | 1,626.84 mi (2,618.15 km) |
| Portimao to Olkusz | 1,656.36 mi (2,665.65 km) |
| Portimao to Olsztyn | 1,794.70 mi (2,888.29 km) |
| Portimao to Opalenica | 1,597.74 mi (2,571.31 km) |
| Portimao to Opoczno | 1,715.03 mi (2,760.07 km) |
