| Fiumicino to Octeville | 859.85 mi (1,383.79 km) |
| Fiumicino to Oignies | 745.35 mi (1,199.53 km) |
| Fiumicino to Oissel | 749.88 mi (1,206.81 km) |
| Fiumicino to Olivet | 657.76 mi (1,058.57 km) |
| Fiumicino to Ollioules | 339.01 mi (545.58 km) |
| Fiumicino to Olonne-sur-Mer | 767.12 mi (1,234.56 km) |
| Fiumicino to Oloron-Sainte-Marie | 661.00 mi (1,063.78 km) |
| Fiumicino to Onet Village | 518.27 mi (834.07 km) |
| Fiumicino to Onnaing | 724.27 mi (1,165.60 km) |
| Fiumicino to Orange | 409.42 mi (658.90 km) |
| Fiumicino to Orchies | 738.66 mi (1,188.76 km) |
| Fiumicino to Orleans | 659.02 mi (1,060.59 km) |
| Fiumicino to Orly | 678.27 mi (1,091.57 km) |
| Fiumicino to Ormesson-sur-Marne | 675.27 mi (1,086.75 km) |
| Fiumicino to Orsay | 683.23 mi (1,099.55 km) |
