| Oak Harbor to Opwijk | 4,891.79 mi (7,872.58 km) |
| Oak Harbor to Ostend | 4,845.84 mi (7,798.62 km) |
| Oak Harbor to Oud-Heverlee | 4,911.25 mi (7,903.90 km) |
| Oak Harbor to Oud-Turnhout | 4,891.23 mi (7,871.68 km) |
| Oak Harbor to Oudenaarde | 4,884.05 mi (7,860.12 km) |
| Oak Harbor to Oudenburg | 4,850.25 mi (7,805.72 km) |
| Oak Harbor to Oupeye | 4,942.12 mi (7,953.57 km) |
| Oak Harbor to Overijse | 4,910.85 mi (7,903.25 km) |
| Oak Harbor to Overpelt | 4,907.39 mi (7,897.68 km) |
| Oak Harbor to Paal | 4,911.73 mi (7,904.66 km) |
| Oak Harbor to Peer | 4,913.10 mi (7,906.88 km) |
| Oak Harbor to Pepinster | 4,954.47 mi (7,973.45 km) |
| Oak Harbor to Peruwelz | 4,902.58 mi (7,889.95 km) |
| Oak Harbor to Perwez | 4,926.86 mi (7,929.02 km) |
| Oak Harbor to Philippeville | 4,944.67 mi (7,957.67 km) |
