| Caversham to Orbetello | 845.96 mi (1,361.43 km) |
| Caversham to Oria | 1,165.44 mi (1,875.59 km) |
| Caversham to Oristano | 920.84 mi (1,481.96 km) |
| Caversham to Orta Nova | 1,055.01 mi (1,697.87 km) |
| Caversham to Orte | 882.88 mi (1,420.86 km) |
| Caversham to Ortona | 957.47 mi (1,540.90 km) |
| Caversham to Orvieto | 860.22 mi (1,384.39 km) |
| Caversham to Orzinuovi | 651.26 mi (1,048.11 km) |
| Caversham to Osimo | 869.13 mi (1,398.73 km) |
| Caversham to Ospitaletto | 648.80 mi (1,044.15 km) |
| Caversham to Ostuni | 1,151.94 mi (1,853.86 km) |
| Caversham to Ottaviano | 1,037.54 mi (1,669.76 km) |
| Caversham to Ovada | 646.97 mi (1,041.20 km) |
| Caversham to Ozieri | 889.48 mi (1,431.47 km) |
| Caversham to Paceco | 1,139.99 mi (1,834.63 km) |
