| Saint Helens to Opwijk | 339.80 mi (546.86 km) |
| Saint Helens to Ostend | 284.30 mi (457.54 km) |
| Saint Helens to Oud-Heverlee | 362.50 mi (583.38 km) |
| Saint Helens to Oud-Turnhout | 357.65 mi (575.58 km) |
| Saint Helens to Oudenaarde | 323.46 mi (520.56 km) |
| Saint Helens to Oudenburg | 288.85 mi (464.85 km) |
| Saint Helens to Oupeye | 403.26 mi (648.98 km) |
| Saint Helens to Overijse | 359.52 mi (578.59 km) |
| Saint Helens to Overpelt | 377.47 mi (607.48 km) |
| Saint Helens to Paal | 374.00 mi (601.90 km) |
| Saint Helens to Peer | 381.57 mi (614.09 km) |
| Saint Helens to Pepinster | 414.87 mi (667.66 km) |
| Saint Helens to Peruwelz | 337.00 mi (542.35 km) |
| Saint Helens to Perwez | 375.88 mi (604.93 km) |
| Saint Helens to Philippeville | 383.89 mi (617.81 km) |
