| Oradea to Oberkirch | 649.16 mi (1,044.72 km) |
| Oradea to Obernburg am Main | 615.12 mi (989.94 km) |
| Oradea to Obernkirchen | 674.26 mi (1,085.12 km) |
| Oradea to Oberschleissheim | 488.28 mi (785.81 km) |
| Oradea to Oberstdorf | 546.09 mi (878.85 km) |
| Oradea to Obertraubling | 469.01 mi (754.81 km) |
| Oradea to Obertshausen | 632.13 mi (1,017.31 km) |
| Oradea to Oberursel | 645.46 mi (1,038.76 km) |
| Oradea to Ochsenfurt | 571.89 mi (920.37 km) |
| Oradea to Ochsenhausen | 561.79 mi (904.12 km) |
| Oradea to Ochtrup | 746.57 mi (1,201.49 km) |
| Oradea to Odenthal | 722.47 mi (1,162.71 km) |
| Oradea to Oelde | 699.01 mi (1,124.95 km) |
| Oradea to Oelsnitz | 500.37 mi (805.26 km) |
| Oradea to Oer-Erkenschwick | 730.09 mi (1,174.97 km) |
