| Vicar to Orbetello | 831.42 mi (1,338.04 km) |
| Vicar to Oria | 1,120.14 mi (1,802.69 km) |
| Vicar to Oristano | 644.04 mi (1,036.49 km) |
| Vicar to Orta Nova | 1,030.01 mi (1,657.65 km) |
| Vicar to Orte | 887.41 mi (1,428.15 km) |
| Vicar to Ortona | 982.05 mi (1,580.45 km) |
| Vicar to Orvieto | 880.99 mi (1,417.82 km) |
| Vicar to Orzinuovi | 880.72 mi (1,417.38 km) |
| Vicar to Osimo | 965.32 mi (1,553.53 km) |
| Vicar to Ospitaletto | 892.66 mi (1,436.60 km) |
| Vicar to Ostuni | 1,119.49 mi (1,801.64 km) |
| Vicar to Ottaviano | 960.46 mi (1,545.70 km) |
| Vicar to Ovada | 798.82 mi (1,285.58 km) |
| Vicar to Ozieri | 678.67 mi (1,092.22 km) |
| Vicar to Paceco | 836.69 mi (1,346.53 km) |
