| Ambares-et-Lagrave to Oria | 966.92 mi (1,556.11 km) |
| Ambares-et-Lagrave to Oristano | 577.94 mi (930.10 km) |
| Ambares-et-Lagrave to Orta Nova | 852.04 mi (1,371.22 km) |
| Ambares-et-Lagrave to Orte | 664.46 mi (1,069.34 km) |
| Ambares-et-Lagrave to Ortona | 764.16 mi (1,229.80 km) |
| Ambares-et-Lagrave to Orvieto | 645.48 mi (1,038.80 km) |
| Ambares-et-Lagrave to Orzinuovi | 508.34 mi (818.10 km) |
| Ambares-et-Lagrave to Osimo | 698.17 mi (1,123.60 km) |
| Ambares-et-Lagrave to Ospitaletto | 515.23 mi (829.17 km) |
| Ambares-et-Lagrave to Ostuni | 957.97 mi (1,541.71 km) |
| Ambares-et-Lagrave to Ottaviano | 806.70 mi (1,298.25 km) |
| Ambares-et-Lagrave to Ovada | 448.10 mi (721.15 km) |
| Ambares-et-Lagrave to Ozieri | 566.63 mi (911.90 km) |
| Ambares-et-Lagrave to Paceco | 826.47 mi (1,330.07 km) |
| Ambares-et-Lagrave to Pachino | 990.14 mi (1,593.48 km) |
