| Horizon West to Opwijk | 4,543.71 mi (7,312.39 km) |
| Horizon West to Ostend | 4,486.08 mi (7,219.65 km) |
| Horizon West to Oud-Heverlee | 4,566.50 mi (7,349.08 km) |
| Horizon West to Oud-Turnhout | 4,570.31 mi (7,355.21 km) |
| Horizon West to Oudenaarde | 4,521.43 mi (7,276.54 km) |
| Horizon West to Oudenburg | 4,490.21 mi (7,226.29 km) |
| Horizon West to Oupeye | 4,609.85 mi (7,418.84 km) |
| Horizon West to Overijse | 4,561.88 mi (7,341.63 km) |
| Horizon West to Overpelt | 4,590.24 mi (7,387.28 km) |
| Horizon West to Paal | 4,583.61 mi (7,376.61 km) |
| Horizon West to Peer | 4,593.44 mi (7,392.42 km) |
| Horizon West to Pepinster | 4,620.00 mi (7,435.17 km) |
| Horizon West to Peruwelz | 4,526.93 mi (7,285.38 km) |
| Horizon West to Perwez | 4,576.80 mi (7,365.66 km) |
| Horizon West to Philippeville | 4,573.93 mi (7,361.03 km) |
