| Cernavoda to Oberkirch | 989.91 mi (1,593.11 km) |
| Cernavoda to Obernburg am Main | 963.23 mi (1,550.17 km) |
| Cernavoda to Obernkirchen | 1,022.89 mi (1,646.19 km) |
| Cernavoda to Oberschleissheim | 829.34 mi (1,334.70 km) |
| Cernavoda to Oberstdorf | 877.93 mi (1,412.88 km) |
| Cernavoda to Obertraubling | 815.63 mi (1,312.64 km) |
| Cernavoda to Obertshausen | 980.76 mi (1,578.37 km) |
| Cernavoda to Oberursel | 994.32 mi (1,600.21 km) |
| Cernavoda to Ochsenfurt | 919.89 mi (1,480.43 km) |
| Cernavoda to Ochsenhausen | 900.05 mi (1,448.49 km) |
| Cernavoda to Ochtrup | 1,096.25 mi (1,764.24 km) |
| Cernavoda to Odenthal | 1,072.30 mi (1,725.69 km) |
| Cernavoda to Oelde | 1,048.84 mi (1,687.95 km) |
| Cernavoda to Oelsnitz | 850.44 mi (1,368.66 km) |
| Cernavoda to Oer-Erkenschwick | 1,080.17 mi (1,738.37 km) |
