| Petersburg to Opwijk | 3,945.19 mi (6,349.17 km) |
| Petersburg to Ostend | 3,887.52 mi (6,256.36 km) |
| Petersburg to Oud-Heverlee | 3,968.14 mi (6,386.11 km) |
| Petersburg to Oud-Turnhout | 3,969.28 mi (6,387.95 km) |
| Petersburg to Oudenaarde | 3,924.08 mi (6,315.20 km) |
| Petersburg to Oudenburg | 3,891.79 mi (6,263.22 km) |
| Petersburg to Oupeye | 4,011.08 mi (6,455.21 km) |
| Petersburg to Overijse | 3,963.91 mi (6,379.29 km) |
| Petersburg to Overpelt | 3,989.25 mi (6,420.08 km) |
| Petersburg to Paal | 3,983.73 mi (6,411.19 km) |
| Petersburg to Peer | 3,992.81 mi (6,425.81 km) |
| Petersburg to Pepinster | 4,021.73 mi (6,472.35 km) |
| Petersburg to Peruwelz | 3,931.28 mi (6,326.78 km) |
| Petersburg to Perwez | 3,979.32 mi (6,404.10 km) |
| Petersburg to Philippeville | 3,978.86 mi (6,403.35 km) |
