| Hudson to Opwijk | 3,921.50 mi (6,311.05 km) |
| Hudson to Ostend | 3,864.34 mi (6,219.06 km) |
| Hudson to Oud-Heverlee | 3,944.47 mi (6,348.01 km) |
| Hudson to Oud-Turnhout | 3,941.79 mi (6,343.70 km) |
| Hudson to Oudenaarde | 3,902.25 mi (6,280.06 km) |
| Hudson to Oudenburg | 3,868.76 mi (6,226.16 km) |
| Hudson to Oupeye | 3,986.41 mi (6,415.50 km) |
| Hudson to Overijse | 3,940.81 mi (6,342.12 km) |
| Hudson to Overpelt | 3,961.63 mi (6,375.63 km) |
| Hudson to Paal | 3,957.74 mi (6,369.37 km) |
| Hudson to Peer | 3,965.68 mi (6,382.15 km) |
| Hudson to Pepinster | 3,997.66 mi (6,433.62 km) |
| Hudson to Peruwelz | 3,911.73 mi (6,295.32 km) |
| Hudson to Perwez | 3,956.77 mi (6,367.81 km) |
| Hudson to Philippeville | 3,959.63 mi (6,372.41 km) |
