| Castelbuono to Octeville | 1,122.34 mi (1,806.23 km) |
| Castelbuono to Oignies | 1,023.59 mi (1,647.32 km) |
| Castelbuono to Oissel | 1,019.01 mi (1,639.94 km) |
| Castelbuono to Olivet | 920.85 mi (1,481.96 km) |
| Castelbuono to Ollioules | 562.72 mi (905.61 km) |
| Castelbuono to Olonne-sur-Mer | 1,003.21 mi (1,614.51 km) |
| Castelbuono to Oloron-Sainte-Marie | 851.64 mi (1,370.58 km) |
| Castelbuono to Onet Village | 744.40 mi (1,197.99 km) |
| Castelbuono to Onnaing | 1,003.49 mi (1,614.97 km) |
| Castelbuono to Orange | 645.96 mi (1,039.57 km) |
| Castelbuono to Orchies | 1,017.41 mi (1,637.36 km) |
| Castelbuono to Orleans | 922.41 mi (1,484.47 km) |
| Castelbuono to Orly | 948.52 mi (1,526.49 km) |
| Castelbuono to Ormesson-sur-Marne | 946.22 mi (1,522.79 km) |
| Castelbuono to Orsay | 952.55 mi (1,532.98 km) |
