| Slobozia to Oberkirch | 953.49 mi (1,534.50 km) |
| Slobozia to Obernburg am Main | 926.91 mi (1,491.71 km) |
| Slobozia to Obernkirchen | 987.50 mi (1,589.23 km) |
| Slobozia to Oberschleissheim | 792.92 mi (1,276.07 km) |
| Slobozia to Oberstdorf | 841.66 mi (1,354.52 km) |
| Slobozia to Obertraubling | 779.26 mi (1,254.09 km) |
| Slobozia to Obertshausen | 944.47 mi (1,519.97 km) |
| Slobozia to Oberursel | 958.06 mi (1,541.84 km) |
| Slobozia to Ochsenfurt | 883.57 mi (1,421.96 km) |
| Slobozia to Ochsenhausen | 863.66 mi (1,389.92 km) |
| Slobozia to Ochtrup | 1,060.57 mi (1,706.83 km) |
| Slobozia to Odenthal | 1,036.18 mi (1,667.56 km) |
| Slobozia to Oelde | 1,013.11 mi (1,630.44 km) |
| Slobozia to Oelsnitz | 814.54 mi (1,310.88 km) |
| Slobozia to Oer-Erkenschwick | 1,044.27 mi (1,680.59 km) |
