| Porthcawl to Opwijk | 342.37 mi (550.99 km) |
| Porthcawl to Ostend | 285.64 mi (459.69 km) |
| Porthcawl to Oud-Heverlee | 364.68 mi (586.89 km) |
| Porthcawl to Oud-Turnhout | 373.84 mi (601.63 km) |
| Porthcawl to Oudenaarde | 318.70 mi (512.90 km) |
| Porthcawl to Oudenburg | 289.43 mi (465.80 km) |
| Porthcawl to Oupeye | 408.20 mi (656.94 km) |
| Porthcawl to Overijse | 359.59 mi (578.70 km) |
| Porthcawl to Overpelt | 393.16 mi (632.73 km) |
| Porthcawl to Paal | 384.18 mi (618.28 km) |
| Porthcawl to Peer | 395.42 mi (636.36 km) |
| Porthcawl to Pepinster | 417.64 mi (672.13 km) |
| Porthcawl to Peruwelz | 323.05 mi (519.90 km) |
| Porthcawl to Perwez | 373.88 mi (601.70 km) |
| Porthcawl to Philippeville | 370.02 mi (595.49 km) |
