| Ovidiu to Oberkirch | 1,015.59 mi (1,634.44 km) |
| Ovidiu to Obernburg am Main | 988.15 mi (1,590.27 km) |
| Ovidiu to Obernkirchen | 1,046.10 mi (1,683.54 km) |
| Ovidiu to Oberschleissheim | 854.95 mi (1,375.91 km) |
| Ovidiu to Oberstdorf | 903.97 mi (1,454.80 km) |
| Ovidiu to Obertraubling | 840.74 mi (1,353.05 km) |
| Ovidiu to Obertshausen | 1,005.57 mi (1,618.31 km) |
| Ovidiu to Oberursel | 1,019.08 mi (1,640.05 km) |
| Ovidiu to Ochsenfurt | 944.82 mi (1,520.55 km) |
| Ovidiu to Ochsenhausen | 925.84 mi (1,490.00 km) |
| Ovidiu to Ochtrup | 1,119.87 mi (1,802.26 km) |
| Ovidiu to Odenthal | 1,096.71 mi (1,764.98 km) |
| Ovidiu to Oelde | 1,072.57 mi (1,726.13 km) |
| Ovidiu to Oelsnitz | 874.46 mi (1,407.31 km) |
| Ovidiu to Oer-Erkenschwick | 1,104.17 mi (1,776.99 km) |
