| Blue Island to Opwijk | 4,141.01 mi (6,664.32 km) |
| Blue Island to Ostend | 4,084.55 mi (6,573.45 km) |
| Blue Island to Oud-Heverlee | 4,163.84 mi (6,701.05 km) |
| Blue Island to Oud-Turnhout | 4,158.61 mi (6,692.64 km) |
| Blue Island to Oudenaarde | 4,123.11 mi (6,635.51 km) |
| Blue Island to Oudenburg | 4,089.04 mi (6,580.67 km) |
| Blue Island to Oupeye | 4,204.85 mi (6,767.05 km) |
| Blue Island to Overijse | 4,160.59 mi (6,695.83 km) |
| Blue Island to Overpelt | 4,178.24 mi (6,724.23 km) |
| Blue Island to Paal | 4,175.48 mi (6,719.78 km) |
| Blue Island to Peer | 4,182.60 mi (6,731.24 km) |
| Blue Island to Pepinster | 4,216.44 mi (6,785.71 km) |
| Blue Island to Peruwelz | 4,134.05 mi (6,653.11 km) |
| Blue Island to Perwez | 4,176.81 mi (6,721.93 km) |
| Blue Island to Philippeville | 4,181.87 mi (6,730.07 km) |
