| Smithfield to Opwijk | 4,960.90 mi (7,983.79 km) |
| Smithfield to Ostend | 4,909.35 mi (7,900.83 km) |
| Smithfield to Oud-Heverlee | 4,982.26 mi (8,018.17 km) |
| Smithfield to Oud-Turnhout | 4,968.03 mi (7,995.28 km) |
| Smithfield to Oudenaarde | 4,948.63 mi (7,964.06 km) |
| Smithfield to Oudenburg | 4,913.90 mi (7,908.15 km) |
| Smithfield to Oupeye | 5,018.18 mi (8,075.98 km) |
| Smithfield to Overijse | 4,980.64 mi (8,015.56 km) |
| Smithfield to Overpelt | 4,986.06 mi (8,024.28 km) |
| Smithfield to Paal | 4,987.49 mi (8,026.59 km) |
| Smithfield to Peer | 4,991.33 mi (8,032.77 km) |
| Smithfield to Pepinster | 5,030.51 mi (8,095.82 km) |
| Smithfield to Peruwelz | 4,964.36 mi (7,989.37 km) |
| Smithfield to Perwez | 4,997.12 mi (8,042.09 km) |
| Smithfield to Philippeville | 5,009.90 mi (8,062.66 km) |
