| Hradec Kralove to Oria | 676.46 mi (1,088.66 km) |
| Hradec Kralove to Oristano | 793.88 mi (1,277.63 km) |
| Hradec Kralove to Orta Nova | 613.47 mi (987.28 km) |
| Hradec Kralove to Orte | 559.91 mi (901.08 km) |
| Hradec Kralove to Ortona | 547.28 mi (880.76 km) |
| Hradec Kralove to Orvieto | 546.86 mi (880.09 km) |
| Hradec Kralove to Orzinuovi | 430.25 mi (692.41 km) |
| Hradec Kralove to Osimo | 477.72 mi (768.82 km) |
| Hradec Kralove to Ospitaletto | 417.60 mi (672.07 km) |
| Hradec Kralove to Ostuni | 660.14 mi (1,062.40 km) |
| Hradec Kralove to Ottaviano | 649.94 mi (1,045.98 km) |
| Hradec Kralove to Ovada | 510.35 mi (821.33 km) |
| Hradec Kralove to Ozieri | 742.19 mi (1,194.43 km) |
| Hradec Kralove to Paceco | 860.06 mi (1,384.13 km) |
| Hradec Kralove to Pachino | 932.95 mi (1,501.44 km) |
