| Poggio a Caiano to Octeville | 722.10 mi (1,162.11 km) |
| Poggio a Caiano to Oignies | 595.28 mi (958.01 km) |
| Poggio a Caiano to Oissel | 607.54 mi (977.75 km) |
| Poggio a Caiano to Olivet | 521.83 mi (839.80 km) |
| Poggio a Caiano to Ollioules | 265.81 mi (427.78 km) |
| Poggio a Caiano to Olonne-sur-Mer | 652.11 mi (1,049.48 km) |
| Poggio a Caiano to Oloron-Sainte-Marie | 586.09 mi (943.22 km) |
| Poggio a Caiano to Onet Village | 421.99 mi (679.13 km) |
| Poggio a Caiano to Onnaing | 573.42 mi (922.84 km) |
| Poggio a Caiano to Orange | 311.82 mi (501.82 km) |
| Poggio a Caiano to Orchies | 588.18 mi (946.59 km) |
| Poggio a Caiano to Orleans | 522.79 mi (841.35 km) |
| Poggio a Caiano to Orly | 535.57 mi (861.92 km) |
| Poggio a Caiano to Ormesson-sur-Marne | 531.98 mi (856.13 km) |
| Poggio a Caiano to Orsay | 541.32 mi (871.17 km) |
