| Quattro Castella to Octeville | 664.46 mi (1,069.35 km) |
| Quattro Castella to Oignies | 532.41 mi (856.83 km) |
| Quattro Castella to Oissel | 548.07 mi (882.03 km) |
| Quattro Castella to Olivet | 465.82 mi (749.67 km) |
| Quattro Castella to Ollioules | 252.10 mi (405.71 km) |
| Quattro Castella to Olonne-sur-Mer | 605.60 mi (974.62 km) |
| Quattro Castella to Oloron-Sainte-Marie | 559.60 mi (900.59 km) |
| Quattro Castella to Onet Village | 388.29 mi (624.89 km) |
| Quattro Castella to Onnaing | 510.27 mi (821.20 km) |
| Quattro Castella to Orange | 281.35 mi (452.80 km) |
| Quattro Castella to Orchies | 525.16 mi (845.16 km) |
| Quattro Castella to Orleans | 466.62 mi (750.96 km) |
| Quattro Castella to Orly | 476.12 mi (766.25 km) |
| Quattro Castella to Ormesson-sur-Marne | 472.25 mi (760.01 km) |
| Quattro Castella to Orsay | 482.24 mi (776.09 km) |
