| Circleville to Opwijk | 4,055.35 mi (6,526.46 km) |
| Circleville to Ostend | 3,998.12 mi (6,434.35 km) |
| Circleville to Oud-Heverlee | 4,078.33 mi (6,563.43 km) |
| Circleville to Oud-Turnhout | 4,075.98 mi (6,559.65 km) |
| Circleville to Oudenaarde | 4,035.92 mi (6,495.19 km) |
| Circleville to Oudenburg | 4,002.52 mi (6,441.44 km) |
| Circleville to Oupeye | 4,120.37 mi (6,631.09 km) |
| Circleville to Overijse | 4,074.62 mi (6,557.46 km) |
| Circleville to Overpelt | 4,095.84 mi (6,591.61 km) |
| Circleville to Paal | 4,091.81 mi (6,585.13 km) |
| Circleville to Peer | 4,099.85 mi (6,598.07 km) |
| Circleville to Pepinster | 4,131.58 mi (6,649.13 km) |
| Circleville to Peruwelz | 4,045.20 mi (6,510.12 km) |
| Circleville to Perwez | 4,090.53 mi (6,583.08 km) |
| Circleville to Philippeville | 4,093.09 mi (6,587.20 km) |
