| Bielefeld to Karlovo | 996.22 mi (1,603.26 km) |
| Bielefeld to Karnobat | 1,075.24 mi (1,730.43 km) |
| Bielefeld to Kavarna | 1,089.41 mi (1,753.24 km) |
| Bielefeld to Kazanlak | 1,018.56 mi (1,639.22 km) |
| Bielefeld to Knezha | 928.41 mi (1,494.14 km) |
| Bielefeld to Kostinbrod | 932.51 mi (1,500.73 km) |
| Bielefeld to Kozloduy | 902.21 mi (1,451.97 km) |
| Bielefeld to Kyustendil | 942.69 mi (1,517.11 km) |
| Bielefeld to Levski | 972.58 mi (1,565.22 km) |
| Bielefeld to Lom | 882.59 mi (1,420.39 km) |
| Bielefeld to Lovech | 968.81 mi (1,559.14 km) |
| Bielefeld to Lukovit | 946.07 mi (1,522.55 km) |
| Bielefeld to Lyaskovets | 1,006.55 mi (1,619.88 km) |
| Bielefeld to Mezdra | 932.20 mi (1,500.23 km) |
| Bielefeld to Momchilgrad | 1,073.73 mi (1,728.01 km) |
