| Parkstone to Orbetello | 844.69 mi (1,359.40 km) |
| Parkstone to Oria | 1,174.50 mi (1,890.18 km) |
| Parkstone to Oristano | 903.39 mi (1,453.87 km) |
| Parkstone to Orta Nova | 1,062.20 mi (1,709.44 km) |
| Parkstone to Orte | 885.20 mi (1,424.59 km) |
| Parkstone to Ortona | 964.81 mi (1,552.71 km) |
| Parkstone to Orvieto | 862.68 mi (1,388.35 km) |
| Parkstone to Orzinuovi | 658.92 mi (1,060.44 km) |
| Parkstone to Osimo | 878.32 mi (1,413.52 km) |
| Parkstone to Ospitaletto | 657.75 mi (1,058.55 km) |
| Parkstone to Ostuni | 1,161.56 mi (1,869.34 km) |
| Parkstone to Ottaviano | 1,040.22 mi (1,674.08 km) |
| Parkstone to Ovada | 646.17 mi (1,039.91 km) |
| Parkstone to Ozieri | 875.13 mi (1,408.39 km) |
| Parkstone to Paceco | 1,130.04 mi (1,818.63 km) |
