| Calafat to Oberkirch | 775.23 mi (1,247.62 km) |
| Calafat to Obernburg am Main | 765.57 mi (1,232.07 km) |
| Calafat to Obernkirchen | 854.56 mi (1,375.29 km) |
| Calafat to Oberschleissheim | 619.14 mi (996.41 km) |
| Calafat to Oberstdorf | 655.02 mi (1,054.15 km) |
| Calafat to Obertraubling | 617.16 mi (993.22 km) |
| Calafat to Obertshausen | 784.86 mi (1,263.10 km) |
| Calafat to Oberursel | 799.26 mi (1,286.28 km) |
| Calafat to Ochsenfurt | 722.83 mi (1,163.29 km) |
| Calafat to Ochsenhausen | 683.83 mi (1,100.52 km) |
| Calafat to Ochtrup | 919.68 mi (1,480.08 km) |
| Calafat to Odenthal | 882.39 mi (1,420.07 km) |
| Calafat to Oelde | 871.44 mi (1,402.45 km) |
| Calafat to Oelsnitz | 672.62 mi (1,082.47 km) |
| Calafat to Oer-Erkenschwick | 897.47 mi (1,444.34 km) |
