| Petersfield to Orbetello | 823.40 mi (1,325.14 km) |
| Petersfield to Oria | 1,146.87 mi (1,845.71 km) |
| Petersfield to Oristano | 893.47 mi (1,437.90 km) |
| Petersfield to Orta Nova | 1,035.66 mi (1,666.74 km) |
| Petersfield to Orte | 861.61 mi (1,386.63 km) |
| Petersfield to Ortona | 938.13 mi (1,509.77 km) |
| Petersfield to Orvieto | 838.99 mi (1,350.22 km) |
| Petersfield to Orzinuovi | 631.79 mi (1,016.76 km) |
| Petersfield to Osimo | 850.46 mi (1,368.68 km) |
| Petersfield to Ospitaletto | 629.83 mi (1,013.61 km) |
| Petersfield to Ostuni | 1,133.59 mi (1,824.33 km) |
| Petersfield to Ottaviano | 1,016.50 mi (1,635.89 km) |
| Petersfield to Ovada | 624.39 mi (1,004.86 km) |
| Petersfield to Ozieri | 862.91 mi (1,388.72 km) |
| Petersfield to Paceco | 1,114.80 mi (1,794.10 km) |
