| Bulancak to Oberkirch | 1,558.14 mi (2,507.59 km) |
| Bulancak to Obernburg am Main | 1,527.53 mi (2,458.33 km) |
| Bulancak to Obernkirchen | 1,573.11 mi (2,531.68 km) |
| Bulancak to Oberschleissheim | 1,397.34 mi (2,248.79 km) |
| Bulancak to Oberstdorf | 1,446.70 mi (2,328.24 km) |
| Bulancak to Obertraubling | 1,381.31 mi (2,223.00 km) |
| Bulancak to Obertshausen | 1,544.34 mi (2,485.37 km) |
| Bulancak to Oberursel | 1,557.50 mi (2,506.55 km) |
| Bulancak to Ochsenfurt | 1,484.34 mi (2,388.81 km) |
| Bulancak to Ochsenhausen | 1,468.60 mi (2,363.48 km) |
| Bulancak to Ochtrup | 1,649.88 mi (2,655.23 km) |
| Bulancak to Odenthal | 1,632.75 mi (2,627.65 km) |
| Bulancak to Oelde | 1,603.59 mi (2,580.72 km) |
| Bulancak to Oelsnitz | 1,408.52 mi (2,266.79 km) |
| Bulancak to Oer-Erkenschwick | 1,637.20 mi (2,634.82 km) |
