| Buftea to Oberkirch | 889.58 mi (1,431.65 km) |
| Buftea to Obernburg am Main | 866.44 mi (1,394.41 km) |
| Buftea to Obernkirchen | 933.73 mi (1,502.69 km) |
| Buftea to Oberschleissheim | 729.50 mi (1,174.02 km) |
| Buftea to Oberstdorf | 775.95 mi (1,248.77 km) |
| Buftea to Obertraubling | 718.14 mi (1,155.74 km) |
| Buftea to Obertshausen | 884.43 mi (1,423.35 km) |
| Buftea to Oberursel | 898.23 mi (1,445.56 km) |
| Buftea to Ochsenfurt | 823.11 mi (1,324.66 km) |
| Buftea to Ochsenhausen | 799.26 mi (1,286.28 km) |
| Buftea to Ochtrup | 1,005.12 mi (1,617.59 km) |
| Buftea to Odenthal | 977.67 mi (1,573.41 km) |
| Buftea to Oelde | 957.34 mi (1,540.69 km) |
| Buftea to Oelsnitz | 757.97 mi (1,219.83 km) |
| Buftea to Oer-Erkenschwick | 987.39 mi (1,589.05 km) |
