| Castelnau-le-Lez to Oria | 735.88 mi (1,184.28 km) |
| Castelnau-le-Lez to Oristano | 353.23 mi (568.47 km) |
| Castelnau-le-Lez to Orta Nova | 621.87 mi (1,000.81 km) |
| Castelnau-le-Lez to Orte | 435.82 mi (701.39 km) |
| Castelnau-le-Lez to Ortona | 537.56 mi (865.12 km) |
| Castelnau-le-Lez to Orvieto | 418.24 mi (673.10 km) |
| Castelnau-le-Lez to Orzinuovi | 321.04 mi (516.66 km) |
| Castelnau-le-Lez to Osimo | 479.58 mi (771.81 km) |
| Castelnau-le-Lez to Ospitaletto | 331.18 mi (532.99 km) |
| Castelnau-le-Lez to Ostuni | 727.63 mi (1,171.01 km) |
| Castelnau-le-Lez to Ottaviano | 573.68 mi (923.25 km) |
| Castelnau-le-Lez to Ovada | 245.20 mi (394.61 km) |
| Castelnau-le-Lez to Ozieri | 335.80 mi (540.42 km) |
| Castelnau-le-Lez to Paceco | 597.01 mi (960.79 km) |
| Castelnau-le-Lez to Pachino | 759.14 mi (1,221.71 km) |
