| Balchik to Obernburg am Main | 1,001.49 mi (1,611.75 km) |
| Balchik to Obernkirchen | 1,068.48 mi (1,719.55 km) |
| Balchik to Oberschleissheim | 863.30 mi (1,389.35 km) |
| Balchik to Oberstdorf | 907.49 mi (1,460.47 km) |
| Balchik to Obertraubling | 853.05 mi (1,372.86 km) |
| Balchik to Obertshausen | 1,019.57 mi (1,640.84 km) |
| Balchik to Oberursel | 1,033.41 mi (1,663.11 km) |
| Balchik to Ochsenfurt | 958.16 mi (1,542.02 km) |
| Balchik to Ochsenhausen | 932.22 mi (1,500.26 km) |
| Balchik to Ochtrup | 1,140.27 mi (1,835.08 km) |
| Balchik to Odenthal | 1,113.00 mi (1,791.20 km) |
| Balchik to Oelde | 1,092.53 mi (1,758.25 km) |
| Balchik to Oelsnitz | 893.24 mi (1,437.52 km) |
| Balchik to Oer-Erkenschwick | 1,122.71 mi (1,806.82 km) |
| Balchik to Oerlinghausen | 1,076.41 mi (1,732.32 km) |
