| Ludwigsburg to Karlovo | 865.40 mi (1,392.73 km) |
| Ludwigsburg to Karnobat | 957.38 mi (1,540.75 km) |
| Ludwigsburg to Kavarna | 987.28 mi (1,588.88 km) |
| Ludwigsburg to Kazanlak | 891.15 mi (1,434.17 km) |
| Ludwigsburg to Knezha | 801.96 mi (1,290.63 km) |
| Ludwigsburg to Kostinbrod | 793.09 mi (1,276.36 km) |
| Ludwigsburg to Kozloduy | 776.68 mi (1,249.95 km) |
| Ludwigsburg to Kyustendil | 794.60 mi (1,278.78 km) |
| Ludwigsburg to Levski | 851.33 mi (1,370.08 km) |
| Ludwigsburg to Lom | 754.23 mi (1,213.82 km) |
| Ludwigsburg to Lovech | 842.45 mi (1,355.79 km) |
| Ludwigsburg to Lukovit | 816.88 mi (1,314.64 km) |
| Ludwigsburg to Lyaskovets | 886.00 mi (1,425.87 km) |
| Ludwigsburg to Mezdra | 799.43 mi (1,286.56 km) |
| Ludwigsburg to Momchilgrad | 936.44 mi (1,507.05 km) |
