| Hunedoara to Oberkirch | 721.53 mi (1,161.19 km) |
| Hunedoara to Obernburg am Main | 697.20 mi (1,122.04 km) |
| Hunedoara to Obernkirchen | 767.78 mi (1,235.63 km) |
| Hunedoara to Oberschleissheim | 561.06 mi (902.94 km) |
| Hunedoara to Oberstdorf | 610.11 mi (981.88 km) |
| Hunedoara to Obertraubling | 548.90 mi (883.37 km) |
| Hunedoara to Obertshausen | 715.22 mi (1,151.03 km) |
| Hunedoara to Oberursel | 729.05 mi (1,173.29 km) |
| Hunedoara to Ochsenfurt | 653.86 mi (1,052.29 km) |
| Hunedoara to Ochsenhausen | 631.65 mi (1,016.55 km) |
| Hunedoara to Ochtrup | 837.81 mi (1,348.32 km) |
| Hunedoara to Odenthal | 808.80 mi (1,301.63 km) |
| Hunedoara to Oelde | 789.86 mi (1,271.15 km) |
| Hunedoara to Oelsnitz | 590.20 mi (949.83 km) |
| Hunedoara to Oer-Erkenschwick | 819.22 mi (1,318.41 km) |
