| Southport to Opwijk | 355.47 mi (572.07 km) |
| Southport to Ostend | 300.31 mi (483.30 km) |
| Southport to Oud-Heverlee | 378.08 mi (608.46 km) |
| Southport to Oud-Turnhout | 372.45 mi (599.40 km) |
| Southport to Oudenaarde | 339.54 mi (546.43 km) |
| Southport to Oudenburg | 304.86 mi (490.62 km) |
| Southport to Oupeye | 418.53 mi (673.57 km) |
| Southport to Overijse | 375.22 mi (603.86 km) |
| Southport to Overpelt | 392.21 mi (631.19 km) |
| Southport to Paal | 389.09 mi (626.19 km) |
| Southport to Peer | 396.41 mi (637.96 km) |
| Southport to Pepinster | 430.22 mi (692.38 km) |
| Southport to Peruwelz | 353.39 mi (568.73 km) |
| Southport to Perwez | 391.63 mi (630.26 km) |
| Southport to Philippeville | 400.13 mi (643.95 km) |
