| Gantt to Opwijk | 4,263.73 mi (6,861.81 km) |
| Gantt to Ostend | 4,206.11 mi (6,769.08 km) |
| Gantt to Oud-Heverlee | 4,286.70 mi (6,898.78 km) |
| Gantt to Oud-Turnhout | 4,287.08 mi (6,899.40 km) |
| Gantt to Oudenaarde | 4,242.96 mi (6,828.39 km) |
| Gantt to Oudenburg | 4,210.40 mi (6,775.99 km) |
| Gantt to Oupeye | 4,329.48 mi (6,967.63 km) |
| Gantt to Overijse | 4,282.58 mi (6,892.14 km) |
| Gantt to Overpelt | 4,307.05 mi (6,931.52 km) |
| Gantt to Paal | 4,301.85 mi (6,923.15 km) |
| Gantt to Peer | 4,310.71 mi (6,937.42 km) |
| Gantt to Pepinster | 4,340.26 mi (6,984.97 km) |
| Gantt to Peruwelz | 4,250.59 mi (6,840.66 km) |
| Gantt to Perwez | 4,298.11 mi (6,917.14 km) |
| Gantt to Philippeville | 4,298.27 mi (6,917.39 km) |
