| Karlovo to Bobenheim-Roxheim | 919.25 mi (1,479.39 km) |
| Karlovo to Bobingen | 779.78 mi (1,254.93 km) |
| Karlovo to Boblingen | 866.96 mi (1,395.23 km) |
| Karlovo to Bocholt | 1,058.77 mi (1,703.92 km) |
| Karlovo to Bochum | 1,024.43 mi (1,648.67 km) |
| Karlovo to Bockenem | 940.82 mi (1,514.10 km) |
| Karlovo to Bockhorn | 1,069.44 mi (1,721.10 km) |
| Karlovo to Bogen | 726.01 mi (1,168.39 km) |
| Karlovo to Bohl-Iggelheim | 915.25 mi (1,472.95 km) |
| Karlovo to Bohmte | 1,017.34 mi (1,637.26 km) |
| Karlovo to Boizenburg | 982.95 mi (1,581.91 km) |
| Karlovo to Bonen | 1,008.38 mi (1,622.83 km) |
| Karlovo to Bonn | 1,004.32 mi (1,616.29 km) |
| Karlovo to Bopfingen | 816.50 mi (1,314.03 km) |
| Karlovo to Boppard | 969.52 mi (1,560.29 km) |
