| Castellaneta to Octeville | 1,093.47 mi (1,759.77 km) |
| Castellaneta to Oignies | 954.46 mi (1,536.05 km) |
| Castellaneta to Oissel | 977.15 mi (1,572.57 km) |
| Castellaneta to Olivet | 893.73 mi (1,438.33 km) |
| Castellaneta to Ollioules | 595.44 mi (958.27 km) |
| Castellaneta to Olonne-sur-Mer | 1,017.95 mi (1,638.23 km) |
| Castellaneta to Oloron-Sainte-Marie | 917.23 mi (1,476.13 km) |
| Castellaneta to Onet Village | 773.41 mi (1,244.69 km) |
| Castellaneta to Onnaing | 930.61 mi (1,497.67 km) |
| Castellaneta to Orange | 663.62 mi (1,067.99 km) |
| Castellaneta to Orchies | 946.31 mi (1,522.93 km) |
| Castellaneta to Orleans | 894.67 mi (1,439.83 km) |
| Castellaneta to Orly | 905.25 mi (1,456.85 km) |
| Castellaneta to Ormesson-sur-Marne | 901.27 mi (1,450.45 km) |
| Castellaneta to Orsay | 911.44 mi (1,466.82 km) |
