| Louisville to Octeville | 4,035.15 mi (6,493.94 km) |
| Louisville to Oignies | 4,198.10 mi (6,756.20 km) |
| Louisville to Oissel | 4,155.14 mi (6,687.04 km) |
| Louisville to Olivet | 4,232.83 mi (6,812.09 km) |
| Louisville to Ollioules | 4,556.57 mi (7,333.09 km) |
| Louisville to Olonne-sur-Mer | 4,117.15 mi (6,625.92 km) |
| Louisville to Oloron-Sainte-Marie | 4,270.16 mi (6,872.16 km) |
| Louisville to Onet Village | 4,373.55 mi (7,038.55 km) |
| Louisville to Onnaing | 4,224.49 mi (6,798.66 km) |
| Louisville to Orange | 4,477.06 mi (7,205.14 km) |
| Louisville to Orchies | 4,207.86 mi (6,771.90 km) |
| Louisville to Orleans | 4,232.00 mi (6,810.74 km) |
| Louisville to Orly | 4,226.16 mi (6,801.35 km) |
| Louisville to Ormesson-sur-Marne | 4,230.82 mi (6,808.85 km) |
| Louisville to Orsay | 4,219.16 mi (6,790.08 km) |
