| Castellbisbal to Orbetello | 478.65 mi (770.31 km) |
| Castellbisbal to Oria | 817.94 mi (1,316.34 km) |
| Castellbisbal to Oristano | 362.76 mi (583.81 km) |
| Castellbisbal to Orta Nova | 710.84 mi (1,143.98 km) |
| Castellbisbal to Orte | 538.42 mi (866.51 km) |
| Castellbisbal to Ortona | 640.74 mi (1,031.18 km) |
| Castellbisbal to Orvieto | 525.95 mi (846.43 km) |
| Castellbisbal to Orzinuovi | 481.93 mi (775.59 km) |
| Castellbisbal to Osimo | 601.70 mi (968.34 km) |
| Castellbisbal to Ospitaletto | 493.34 mi (793.95 km) |
| Castellbisbal to Ostuni | 812.75 mi (1,307.99 km) |
| Castellbisbal to Ottaviano | 650.83 mi (1,047.40 km) |
| Castellbisbal to Ovada | 400.96 mi (645.29 km) |
| Castellbisbal to Ozieri | 370.99 mi (597.05 km) |
| Castellbisbal to Paceco | 610.68 mi (982.79 km) |
