| Buzau to Oberkirch | 913.22 mi (1,469.69 km) |
| Buzau to Obernburg am Main | 883.92 mi (1,422.54 km) |
| Buzau to Obernkirchen | 941.27 mi (1,514.83 km) |
| Buzau to Oberschleissheim | 752.35 mi (1,210.79 km) |
| Buzau to Oberstdorf | 803.50 mi (1,293.11 km) |
| Buzau to Obertraubling | 736.86 mi (1,185.87 km) |
| Buzau to Obertshausen | 901.20 mi (1,450.34 km) |
| Buzau to Oberursel | 914.64 mi (1,471.98 km) |
| Buzau to Ochsenfurt | 840.62 mi (1,352.85 km) |
| Buzau to Ochsenhausen | 823.97 mi (1,326.05 km) |
| Buzau to Ochtrup | 1,014.93 mi (1,633.37 km) |
| Buzau to Odenthal | 991.96 mi (1,596.40 km) |
| Buzau to Oelde | 967.61 mi (1,557.22 km) |
| Buzau to Oelsnitz | 769.54 mi (1,238.46 km) |
| Buzau to Oer-Erkenschwick | 999.24 mi (1,608.13 km) |
