| Hradec Kralove to Navodari | 722.77 mi (1,163.19 km) |
| Hradec Kralove to Negresti-Oas | 379.74 mi (611.13 km) |
| Hradec Kralove to Nehoiu | 589.90 mi (949.35 km) |
| Hradec Kralove to Ocna Mures | 453.23 mi (729.40 km) |
| Hradec Kralove to Odobesti | 602.50 mi (969.63 km) |
| Hradec Kralove to Odorheiu Secuiesc | 511.44 mi (823.08 km) |
| Hradec Kralove to Oltenita | 659.70 mi (1,061.69 km) |
| Hradec Kralove to Onesti | 571.80 mi (920.23 km) |
| Hradec Kralove to Oradea | 352.31 mi (566.99 km) |
| Hradec Kralove to Orastie | 454.16 mi (730.90 km) |
| Hradec Kralove to Oravita | 448.97 mi (722.54 km) |
| Hradec Kralove to Orsova | 487.01 mi (783.76 km) |
| Hradec Kralove to Otelu Rosu | 442.83 mi (712.67 km) |
| Hradec Kralove to Otopeni | 617.36 mi (993.55 km) |
| Hradec Kralove to Ovidiu | 722.94 mi (1,163.46 km) |
