| Effingham to Opwijk | 4,295.73 mi (6,913.31 km) |
| Effingham to Ostend | 4,238.97 mi (6,821.96 km) |
| Effingham to Oud-Heverlee | 4,318.62 mi (6,950.15 km) |
| Effingham to Oud-Turnhout | 4,314.36 mi (6,943.29 km) |
| Effingham to Oudenaarde | 4,277.30 mi (6,883.64 km) |
| Effingham to Oudenburg | 4,243.42 mi (6,829.13 km) |
| Effingham to Oupeye | 4,360.01 mi (7,016.76 km) |
| Effingham to Overijse | 4,315.22 mi (6,944.67 km) |
| Effingham to Overpelt | 4,334.08 mi (6,975.02 km) |
| Effingham to Paal | 4,330.89 mi (6,969.89 km) |
| Effingham to Peer | 4,338.32 mi (6,981.86 km) |
| Effingham to Pepinster | 4,371.48 mi (7,035.22 km) |
| Effingham to Peruwelz | 4,287.67 mi (6,900.33 km) |
| Effingham to Perwez | 4,331.35 mi (6,970.63 km) |
| Effingham to Philippeville | 4,335.55 mi (6,977.39 km) |
