| Grenzach-Wyhlen to Karlovo | 900.08 mi (1,448.54 km) |
| Grenzach-Wyhlen to Karnobat | 998.75 mi (1,607.34 km) |
| Grenzach-Wyhlen to Kavarna | 1,037.46 mi (1,669.63 km) |
| Grenzach-Wyhlen to Kazanlak | 927.60 mi (1,492.83 km) |
| Grenzach-Wyhlen to Knezha | 840.92 mi (1,353.32 km) |
| Grenzach-Wyhlen to Kostinbrod | 823.37 mi (1,325.09 km) |
| Grenzach-Wyhlen to Kozloduy | 816.84 mi (1,314.58 km) |
| Grenzach-Wyhlen to Kyustendil | 818.40 mi (1,317.09 km) |
| Grenzach-Wyhlen to Levski | 892.54 mi (1,436.41 km) |
| Grenzach-Wyhlen to Lom | 793.10 mi (1,276.38 km) |
| Grenzach-Wyhlen to Lovech | 880.57 mi (1,417.14 km) |
| Grenzach-Wyhlen to Lukovit | 853.69 mi (1,373.89 km) |
| Grenzach-Wyhlen to Lyaskovets | 926.97 mi (1,491.81 km) |
| Grenzach-Wyhlen to Mezdra | 834.22 mi (1,342.55 km) |
| Grenzach-Wyhlen to Momchilgrad | 965.32 mi (1,553.53 km) |
