| Republic to Orbetello | 5,182.79 mi (8,340.89 km) |
| Republic to Oria | 5,525.34 mi (8,892.18 km) |
| Republic to Oristano | 5,177.69 mi (8,332.69 km) |
| Republic to Orta Nova | 5,411.71 mi (8,709.30 km) |
| Republic to Orte | 5,229.47 mi (8,416.02 km) |
| Republic to Ortona | 5,314.87 mi (8,553.46 km) |
| Republic to Orvieto | 5,207.48 mi (8,380.64 km) |
| Republic to Orzinuovi | 5,010.32 mi (8,063.34 km) |
| Republic to Osimo | 5,229.84 mi (8,416.62 km) |
| Republic to Ospitaletto | 5,009.59 mi (8,062.15 km) |
| Republic to Ostuni | 5,512.80 mi (8,872.00 km) |
| Republic to Ottaviano | 5,383.19 mi (8,663.41 km) |
| Republic to Ovada | 4,989.45 mi (8,029.74 km) |
| Republic to Ozieri | 5,167.50 mi (8,316.29 km) |
| Republic to Paceco | 5,427.32 mi (8,734.43 km) |
