| San Giovanni Valdarno to Octeville | 751.18 mi (1,208.91 km) |
| San Giovanni Valdarno to Oignies | 623.20 mi (1,002.94 km) |
| San Giovanni Valdarno to Oissel | 636.49 mi (1,024.34 km) |
| San Giovanni Valdarno to Olivet | 550.91 mi (886.61 km) |
| San Giovanni Valdarno to Ollioules | 287.11 mi (462.07 km) |
| San Giovanni Valdarno to Olonne-sur-Mer | 680.20 mi (1,094.67 km) |
| San Giovanni Valdarno to Oloron-Sainte-Marie | 609.62 mi (981.09 km) |
| San Giovanni Valdarno to Onet Village | 447.76 mi (720.60 km) |
| San Giovanni Valdarno to Onnaing | 601.11 mi (967.39 km) |
| San Giovanni Valdarno to Orange | 337.23 mi (542.71 km) |
| San Giovanni Valdarno to Orchies | 615.98 mi (991.32 km) |
| San Giovanni Valdarno to Orleans | 551.87 mi (888.16 km) |
| San Giovanni Valdarno to Orly | 564.52 mi (908.50 km) |
| San Giovanni Valdarno to Ormesson-sur-Marne | 560.89 mi (902.66 km) |
| San Giovanni Valdarno to Orsay | 570.31 mi (917.82 km) |
