| Port-de-Bouc to Oria | 679.25 mi (1,093.14 km) |
| Port-de-Bouc to Oristano | 304.97 mi (490.80 km) |
| Port-de-Bouc to Orta Nova | 565.38 mi (909.89 km) |
| Port-de-Bouc to Orte | 379.73 mi (611.12 km) |
| Port-de-Bouc to Ortona | 481.79 mi (775.37 km) |
| Port-de-Bouc to Orvieto | 362.51 mi (583.41 km) |
| Port-de-Bouc to Orzinuovi | 280.24 mi (451.01 km) |
| Port-de-Bouc to Osimo | 425.98 mi (685.56 km) |
| Port-de-Bouc to Ospitaletto | 291.30 mi (468.80 km) |
| Port-de-Bouc to Ostuni | 671.09 mi (1,080.01 km) |
| Port-de-Bouc to Ottaviano | 516.93 mi (831.92 km) |
| Port-de-Bouc to Ovada | 200.72 mi (323.02 km) |
| Port-de-Bouc to Ozieri | 283.60 mi (456.41 km) |
| Port-de-Bouc to Paceco | 544.76 mi (876.70 km) |
| Port-de-Bouc to Pachino | 705.79 mi (1,135.86 km) |
