| Formello to Octeville | 851.12 mi (1,369.74 km) |
| Formello to Oignies | 731.93 mi (1,177.93 km) |
| Formello to Oissel | 739.62 mi (1,190.30 km) |
| Formello to Olivet | 649.33 mi (1,045.00 km) |
| Formello to Ollioules | 341.02 mi (548.83 km) |
| Formello to Olonne-sur-Mer | 763.86 mi (1,229.32 km) |
| Formello to Oloron-Sainte-Marie | 664.86 mi (1,069.98 km) |
| Formello to Onet Village | 517.91 mi (833.49 km) |
| Formello to Onnaing | 710.40 mi (1,143.29 km) |
| Formello to Orange | 408.15 mi (656.85 km) |
| Formello to Orchies | 725.01 mi (1,166.79 km) |
| Formello to Orleans | 650.51 mi (1,046.89 km) |
| Formello to Orly | 667.82 mi (1,074.75 km) |
| Formello to Ormesson-sur-Marne | 664.62 mi (1,069.61 km) |
| Formello to Orsay | 673.05 mi (1,083.16 km) |
