| Ferrara to Octeville | 703.41 mi (1,132.03 km) |
| Ferrara to Oignies | 558.53 mi (898.87 km) |
| Ferrara to Oissel | 584.19 mi (940.17 km) |
| Ferrara to Olivet | 508.03 mi (817.59 km) |
| Ferrara to Ollioules | 309.70 mi (498.42 km) |
| Ferrara to Olonne-sur-Mer | 656.08 mi (1,055.86 km) |
| Ferrara to Oloron-Sainte-Marie | 617.22 mi (993.33 km) |
| Ferrara to Onet Village | 444.85 mi (715.92 km) |
| Ferrara to Onnaing | 534.95 mi (860.91 km) |
| Ferrara to Orange | 338.85 mi (545.33 km) |
| Ferrara to Orchies | 550.51 mi (885.96 km) |
| Ferrara to Orleans | 508.61 mi (818.54 km) |
| Ferrara to Orly | 512.71 mi (825.13 km) |
| Ferrara to Ormesson-sur-Marne | 508.29 mi (818.01 km) |
| Ferrara to Orsay | 519.51 mi (836.06 km) |
