| Killingworth to Opwijk | 368.32 mi (592.75 km) |
| Killingworth to Ostend | 321.68 mi (517.70 km) |
| Killingworth to Oud-Heverlee | 388.68 mi (625.53 km) |
| Killingworth to Oud-Turnhout | 372.84 mi (600.03 km) |
| Killingworth to Oudenaarde | 359.75 mi (578.96 km) |
| Killingworth to Oudenburg | 326.06 mi (524.74 km) |
| Killingworth to Oupeye | 423.13 mi (680.96 km) |
| Killingworth to Overijse | 387.72 mi (623.97 km) |
| Killingworth to Overpelt | 390.89 mi (629.07 km) |
| Killingworth to Paal | 392.42 mi (631.54 km) |
| Killingworth to Peer | 396.14 mi (637.52 km) |
| Killingworth to Pepinster | 435.48 mi (700.85 km) |
| Killingworth to Peruwelz | 378.54 mi (609.20 km) |
| Killingworth to Perwez | 404.00 mi (650.18 km) |
| Killingworth to Philippeville | 420.45 mi (676.65 km) |
