| Billerbeck to Karlovo | 1,038.99 mi (1,672.09 km) |
| Billerbeck to Karnobat | 1,120.15 mi (1,802.72 km) |
| Billerbeck to Kavarna | 1,136.39 mi (1,828.84 km) |
| Billerbeck to Kazanlak | 1,061.93 mi (1,709.01 km) |
| Billerbeck to Knezha | 971.70 mi (1,563.80 km) |
| Billerbeck to Kostinbrod | 973.63 mi (1,566.91 km) |
| Billerbeck to Kozloduy | 945.56 mi (1,521.74 km) |
| Billerbeck to Kyustendil | 982.20 mi (1,580.70 km) |
| Billerbeck to Levski | 1,016.78 mi (1,636.35 km) |
| Billerbeck to Lom | 925.44 mi (1,489.36 km) |
| Billerbeck to Lovech | 1,012.22 mi (1,629.01 km) |
| Billerbeck to Lukovit | 988.97 mi (1,591.59 km) |
| Billerbeck to Lyaskovets | 1,050.93 mi (1,691.30 km) |
| Billerbeck to Mezdra | 974.48 mi (1,568.27 km) |
| Billerbeck to Momchilgrad | 1,115.58 mi (1,795.36 km) |
