| Friedrichsthal to Karlovo | 964.22 mi (1,551.77 km) |
| Friedrichsthal to Karnobat | 1,056.63 mi (1,700.48 km) |
| Friedrichsthal to Kavarna | 1,086.47 mi (1,748.51 km) |
| Friedrichsthal to Kazanlak | 990.12 mi (1,593.45 km) |
| Friedrichsthal to Knezha | 901.05 mi (1,450.10 km) |
| Friedrichsthal to Kostinbrod | 891.40 mi (1,434.57 km) |
| Friedrichsthal to Kozloduy | 875.82 mi (1,409.50 km) |
| Friedrichsthal to Kyustendil | 891.99 mi (1,435.53 km) |
| Friedrichsthal to Levski | 950.54 mi (1,529.75 km) |
| Friedrichsthal to Lom | 853.29 mi (1,373.24 km) |
| Friedrichsthal to Lovech | 941.51 mi (1,515.21 km) |
| Friedrichsthal to Lukovit | 915.84 mi (1,473.90 km) |
| Friedrichsthal to Lyaskovets | 985.21 mi (1,585.55 km) |
| Friedrichsthal to Mezdra | 898.22 mi (1,445.54 km) |
| Friedrichsthal to Momchilgrad | 1,034.71 mi (1,665.20 km) |
