| Piatra Neamt to Opwijk | 1,040.31 mi (1,674.22 km) |
| Piatra Neamt to Ostend | 1,096.87 mi (1,765.24 km) |
| Piatra Neamt to Oud-Heverlee | 1,018.29 mi (1,638.79 km) |
| Piatra Neamt to Oud-Turnhout | 1,009.33 mi (1,624.35 km) |
| Piatra Neamt to Oudenaarde | 1,064.67 mi (1,713.43 km) |
| Piatra Neamt to Oudenburg | 1,093.07 mi (1,759.13 km) |
| Piatra Neamt to Oupeye | 974.88 mi (1,568.92 km) |
| Piatra Neamt to Overijse | 1,023.67 mi (1,647.44 km) |
| Piatra Neamt to Overpelt | 989.73 mi (1,592.82 km) |
| Piatra Neamt to Paal | 998.32 mi (1,606.65 km) |
| Piatra Neamt to Peer | 987.24 mi (1,588.81 km) |
| Piatra Neamt to Pepinster | 966.10 mi (1,554.78 km) |
| Piatra Neamt to Peruwelz | 1,063.29 mi (1,711.21 km) |
| Piatra Neamt to Perwez | 1,010.19 mi (1,625.75 km) |
| Piatra Neamt to Philippeville | 1,019.09 mi (1,640.07 km) |
