| Challans to Karlovo | 1,334.43 mi (2,147.56 km) |
| Challans to Karnobat | 1,437.47 mi (2,313.38 km) |
| Challans to Kavarna | 1,481.74 mi (2,384.63 km) |
| Challans to Kazanlak | 1,363.10 mi (2,193.71 km) |
| Challans to Knezha | 1,279.39 mi (2,058.98 km) |
| Challans to Kostinbrod | 1,254.98 mi (2,019.70 km) |
| Challans to Kozloduy | 1,256.45 mi (2,022.06 km) |
| Challans to Kyustendil | 1,243.83 mi (2,001.76 km) |
| Challans to Levski | 1,332.10 mi (2,143.81 km) |
| Challans to Lom | 1,232.09 mi (1,982.85 km) |
| Challans to Lovech | 1,317.96 mi (2,121.05 km) |
| Challans to Lukovit | 1,290.38 mi (2,076.67 km) |
| Challans to Lyaskovets | 1,366.02 mi (2,198.40 km) |
| Challans to Mezdra | 1,269.54 mi (2,043.13 km) |
| Challans to Momchilgrad | 1,393.33 mi (2,242.35 km) |
