| Rive-de-Gier to Oria | 742.50 mi (1,194.93 km) |
| Rive-de-Gier to Oristano | 437.68 mi (704.37 km) |
| Rive-de-Gier to Orta Nova | 626.96 mi (1,009.00 km) |
| Rive-de-Gier to Orte | 440.29 mi (708.57 km) |
| Rive-de-Gier to Ortona | 533.53 mi (858.63 km) |
| Rive-de-Gier to Orvieto | 419.11 mi (674.49 km) |
| Rive-de-Gier to Orzinuovi | 257.73 mi (414.78 km) |
| Rive-de-Gier to Osimo | 458.91 mi (738.54 km) |
| Rive-de-Gier to Ospitaletto | 264.00 mi (424.87 km) |
| Rive-de-Gier to Ostuni | 731.79 mi (1,177.71 km) |
| Rive-de-Gier to Ottaviano | 592.02 mi (952.77 km) |
| Rive-de-Gier to Ovada | 205.95 mi (331.44 km) |
| Rive-de-Gier to Ozieri | 406.98 mi (654.96 km) |
| Rive-de-Gier to Paceco | 661.89 mi (1,065.21 km) |
| Rive-de-Gier to Pachino | 816.19 mi (1,313.54 km) |
