| Cittadella to Octeville | 681.56 mi (1,096.86 km) |
| Cittadella to Oignies | 524.39 mi (843.93 km) |
| Cittadella to Oissel | 559.83 mi (900.95 km) |
| Cittadella to Olivet | 491.76 mi (791.41 km) |
| Cittadella to Ollioules | 340.43 mi (547.87 km) |
| Cittadella to Olonne-sur-Mer | 651.61 mi (1,048.67 km) |
| Cittadella to Oloron-Sainte-Marie | 633.77 mi (1,019.96 km) |
| Cittadella to Onet Village | 457.33 mi (736.00 km) |
| Cittadella to Onnaing | 499.74 mi (804.25 km) |
| Cittadella to Orange | 356.82 mi (574.24 km) |
| Cittadella to Orchies | 515.76 mi (830.04 km) |
| Cittadella to Orleans | 492.06 mi (791.89 km) |
| Cittadella to Orly | 489.50 mi (787.77 km) |
| Cittadella to Ormesson-sur-Marne | 484.50 mi (779.73 km) |
| Cittadella to Orsay | 497.00 mi (799.84 km) |
