| Hartlepool to Opwijk | 341.67 mi (549.87 km) |
| Hartlepool to Ostend | 294.56 mi (474.05 km) |
| Hartlepool to Oud-Heverlee | 362.22 mi (582.94 km) |
| Hartlepool to Oud-Turnhout | 347.09 mi (558.59 km) |
| Hartlepool to Oudenaarde | 332.74 mi (535.49 km) |
| Hartlepool to Oudenburg | 298.95 mi (481.11 km) |
| Hartlepool to Oupeye | 397.18 mi (639.20 km) |
| Hartlepool to Overijse | 361.14 mi (581.20 km) |
| Hartlepool to Overpelt | 365.35 mi (587.98 km) |
| Hartlepool to Paal | 366.49 mi (589.81 km) |
| Hartlepool to Peer | 370.52 mi (596.30 km) |
| Hartlepool to Pepinster | 409.52 mi (659.06 km) |
| Hartlepool to Peruwelz | 351.39 mi (565.51 km) |
| Hartlepool to Perwez | 377.47 mi (607.47 km) |
| Hartlepool to Philippeville | 393.54 mi (633.34 km) |
