| Royal Oak to Opwijk | 3,929.82 mi (6,324.44 km) |
| Royal Oak to Ostend | 3,873.00 mi (6,232.99 km) |
| Royal Oak to Oud-Heverlee | 3,952.73 mi (6,361.30 km) |
| Royal Oak to Oud-Turnhout | 3,948.71 mi (6,354.83 km) |
| Royal Oak to Oudenaarde | 3,911.28 mi (6,294.59 km) |
| Royal Oak to Oudenburg | 3,877.45 mi (6,240.15 km) |
| Royal Oak to Oupeye | 3,994.20 mi (6,428.05 km) |
| Royal Oak to Overijse | 3,949.29 mi (6,355.76 km) |
| Royal Oak to Overpelt | 3,968.45 mi (6,386.61 km) |
| Royal Oak to Paal | 3,965.15 mi (6,381.29 km) |
| Royal Oak to Peer | 3,972.67 mi (6,393.39 km) |
| Royal Oak to Pepinster | 4,005.65 mi (6,446.46 km) |
| Royal Oak to Peruwelz | 3,921.54 mi (6,311.10 km) |
| Royal Oak to Perwez | 3,965.39 mi (6,381.69 km) |
| Royal Oak to Philippeville | 3,969.42 mi (6,388.17 km) |
