| Cirencester to Opwijk | 270.44 mi (435.23 km) |
| Cirencester to Ostend | 213.04 mi (342.86 km) |
| Cirencester to Oud-Heverlee | 293.11 mi (471.72 km) |
| Cirencester to Oud-Turnhout | 300.04 mi (482.87 km) |
| Cirencester to Oudenaarde | 247.93 mi (399.00 km) |
| Cirencester to Oudenburg | 217.04 mi (349.30 km) |
| Cirencester to Oupeye | 336.57 mi (541.66 km) |
| Cirencester to Overijse | 288.39 mi (464.11 km) |
| Cirencester to Overpelt | 319.60 mi (514.35 km) |
| Cirencester to Paal | 311.38 mi (501.12 km) |
| Cirencester to Peer | 322.15 mi (518.44 km) |
| Cirencester to Pepinster | 346.53 mi (557.69 km) |
| Cirencester to Peruwelz | 254.62 mi (409.77 km) |
| Cirencester to Perwez | 303.30 mi (488.12 km) |
| Cirencester to Philippeville | 302.33 mi (486.55 km) |
