| Gundelfingen to Karlovo | 900.83 mi (1,449.74 km) |
| Gundelfingen to Karnobat | 997.55 mi (1,605.41 km) |
| Gundelfingen to Kavarna | 1,033.49 mi (1,663.23 km) |
| Gundelfingen to Kazanlak | 927.84 mi (1,493.22 km) |
| Gundelfingen to Knezha | 840.22 mi (1,352.20 km) |
| Gundelfingen to Kostinbrod | 825.33 mi (1,328.24 km) |
| Gundelfingen to Kozloduy | 815.72 mi (1,312.77 km) |
| Gundelfingen to Kyustendil | 822.32 mi (1,323.39 km) |
| Gundelfingen to Levski | 891.23 mi (1,434.29 km) |
| Gundelfingen to Lom | 792.33 mi (1,275.14 km) |
| Gundelfingen to Lovech | 880.21 mi (1,416.56 km) |
| Gundelfingen to Lukovit | 853.69 mi (1,373.88 km) |
| Gundelfingen to Lyaskovets | 925.79 mi (1,489.91 km) |
| Gundelfingen to Mezdra | 834.81 mi (1,343.49 km) |
| Gundelfingen to Momchilgrad | 967.96 mi (1,557.78 km) |
