| Louisville to Opwijk | 4,229.83 mi (6,807.25 km) |
| Louisville to Ostend | 4,172.66 mi (6,715.24 km) |
| Louisville to Oud-Heverlee | 4,252.79 mi (6,844.21 km) |
| Louisville to Oud-Turnhout | 4,250.14 mi (6,839.94 km) |
| Louisville to Oudenaarde | 4,210.55 mi (6,776.22 km) |
| Louisville to Oudenburg | 4,177.07 mi (6,722.34 km) |
| Louisville to Oupeye | 4,294.74 mi (6,911.72 km) |
| Louisville to Overijse | 4,249.13 mi (6,838.31 km) |
| Louisville to Overpelt | 4,269.98 mi (6,871.88 km) |
| Louisville to Paal | 4,266.09 mi (6,865.60 km) |
| Louisville to Peer | 4,274.03 mi (6,878.39 km) |
| Louisville to Pepinster | 4,306.00 mi (6,929.83 km) |
| Louisville to Peruwelz | 4,219.99 mi (6,791.41 km) |
| Louisville to Perwez | 4,265.08 mi (6,863.99 km) |
| Louisville to Philippeville | 4,267.88 mi (6,868.50 km) |
