| Chioggia to Octeville | 717.08 mi (1,154.03 km) |
| Chioggia to Oignies | 562.25 mi (904.86 km) |
| Chioggia to Oissel | 595.91 mi (959.02 km) |
| Chioggia to Olivet | 525.46 mi (845.65 km) |
| Chioggia to Ollioules | 349.49 mi (562.44 km) |
| Chioggia to Olonne-sur-Mer | 681.08 mi (1,096.09 km) |
| Chioggia to Oloron-Sainte-Marie | 652.59 mi (1,050.25 km) |
| Chioggia to Onet Village | 478.25 mi (769.67 km) |
| Chioggia to Onnaing | 537.70 mi (865.35 km) |
| Chioggia to Orange | 374.34 mi (602.44 km) |
| Chioggia to Orchies | 553.68 mi (891.07 km) |
| Chioggia to Orleans | 525.85 mi (846.28 km) |
| Chioggia to Orly | 525.23 mi (845.27 km) |
| Chioggia to Ormesson-sur-Marne | 520.38 mi (837.46 km) |
| Chioggia to Orsay | 532.55 mi (857.06 km) |
