| Karlovo to Bitritto | 424.74 mi (683.56 km) |
| Karlovo to Bollate | 802.60 mi (1,291.65 km) |
| Karlovo to Bologna | 685.23 mi (1,102.77 km) |
| Karlovo to Bolzano | 712.54 mi (1,146.72 km) |
| Karlovo to Bomporto | 702.24 mi (1,130.14 km) |
| Karlovo to Bonate di Sopra | 782.67 mi (1,259.58 km) |
| Karlovo to Bondeno | 685.00 mi (1,102.39 km) |
| Karlovo to Bordighera | 865.15 mi (1,392.32 km) |
| Karlovo to Borgaro Torinese | 869.84 mi (1,399.87 km) |
| Karlovo to Borgo a Buggiano | 712.40 mi (1,146.50 km) |
| Karlovo to Borgo San Dalmazzo | 874.55 mi (1,407.45 km) |
| Karlovo to Borgo San Lorenzo | 680.28 mi (1,094.80 km) |
| Karlovo to Borgomanero | 835.22 mi (1,344.16 km) |
| Karlovo to Borgoricco | 666.67 mi (1,072.90 km) |
| Karlovo to Borgosatollo | 748.11 mi (1,203.96 km) |
