| Felsberg to Karlovo | 930.73 mi (1,497.86 km) |
| Felsberg to Karnobat | 1,012.24 mi (1,629.05 km) |
| Felsberg to Kavarna | 1,029.55 mi (1,656.89 km) |
| Felsberg to Kazanlak | 953.70 mi (1,534.84 km) |
| Felsberg to Knezha | 863.47 mi (1,389.62 km) |
| Felsberg to Kostinbrod | 865.47 mi (1,392.85 km) |
| Felsberg to Kozloduy | 837.34 mi (1,347.57 km) |
| Felsberg to Kyustendil | 874.41 mi (1,407.23 km) |
| Felsberg to Levski | 908.69 mi (1,462.39 km) |
| Felsberg to Lom | 817.18 mi (1,315.13 km) |
| Felsberg to Lovech | 904.00 mi (1,454.84 km) |
| Felsberg to Lukovit | 880.71 mi (1,417.37 km) |
| Felsberg to Lyaskovets | 942.87 mi (1,517.41 km) |
| Felsberg to Mezdra | 866.21 mi (1,394.03 km) |
| Felsberg to Momchilgrad | 1,007.35 mi (1,621.17 km) |
