| Orpington to Opwijk | 179.16 mi (288.33 km) |
| Orpington to Ostend | 122.28 mi (196.79 km) |
| Orpington to Oud-Heverlee | 201.64 mi (324.51 km) |
| Orpington to Oud-Turnhout | 210.81 mi (339.26 km) |
| Orpington to Oudenaarde | 156.12 mi (251.25 km) |
| Orpington to Oudenburg | 126.08 mi (202.91 km) |
| Orpington to Oupeye | 245.16 mi (394.55 km) |
| Orpington to Overijse | 196.75 mi (316.64 km) |
| Orpington to Overpelt | 229.97 mi (370.10 km) |
| Orpington to Paal | 220.82 mi (355.38 km) |
| Orpington to Peer | 232.12 mi (373.56 km) |
| Orpington to Pepinster | 254.90 mi (410.22 km) |
| Orpington to Peruwelz | 162.84 mi (262.06 km) |
| Orpington to Perwez | 211.49 mi (340.35 km) |
| Orpington to Philippeville | 210.64 mi (338.99 km) |
