| Borgholzhausen to Karlovo | 1,007.54 mi (1,621.47 km) |
| Borgholzhausen to Karnobat | 1,086.60 mi (1,748.71 km) |
| Borgholzhausen to Kavarna | 1,100.75 mi (1,771.49 km) |
| Borgholzhausen to Kazanlak | 1,029.89 mi (1,657.46 km) |
| Borgholzhausen to Knezha | 939.74 mi (1,512.37 km) |
| Borgholzhausen to Kostinbrod | 943.75 mi (1,518.82 km) |
| Borgholzhausen to Kozloduy | 913.54 mi (1,470.20 km) |
| Borgholzhausen to Kyustendil | 953.84 mi (1,535.05 km) |
| Borgholzhausen to Levski | 983.94 mi (1,583.49 km) |
| Borgholzhausen to Lom | 893.91 mi (1,438.60 km) |
| Borgholzhausen to Lovech | 980.14 mi (1,577.38 km) |
| Borgholzhausen to Lukovit | 957.38 mi (1,540.76 km) |
| Borgholzhausen to Lyaskovets | 1,017.90 mi (1,638.15 km) |
| Borgholzhausen to Mezdra | 943.49 mi (1,518.40 km) |
| Borgholzhausen to Momchilgrad | 1,085.01 mi (1,746.16 km) |
