| Bad Frankenhausen to Karlovo | 880.25 mi (1,416.62 km) |
| Bad Frankenhausen to Karnobat | 957.43 mi (1,540.84 km) |
| Bad Frankenhausen to Kavarna | 970.51 mi (1,561.89 km) |
| Bad Frankenhausen to Kazanlak | 902.01 mi (1,451.65 km) |
| Bad Frankenhausen to Knezha | 812.01 mi (1,306.81 km) |
| Bad Frankenhausen to Kostinbrod | 818.31 mi (1,316.94 km) |
| Bad Frankenhausen to Kozloduy | 785.77 mi (1,264.58 km) |
| Bad Frankenhausen to Kyustendil | 830.37 mi (1,336.35 km) |
| Bad Frankenhausen to Levski | 855.37 mi (1,376.58 km) |
| Bad Frankenhausen to Lom | 766.65 mi (1,233.81 km) |
| Bad Frankenhausen to Lovech | 852.26 mi (1,371.58 km) |
| Bad Frankenhausen to Lukovit | 830.01 mi (1,335.77 km) |
| Bad Frankenhausen to Lyaskovets | 889.16 mi (1,430.97 km) |
| Bad Frankenhausen to Mezdra | 816.77 mi (1,314.47 km) |
| Bad Frankenhausen to Momchilgrad | 958.60 mi (1,542.72 km) |
