| Heilbad Heiligenstadt to Karlovo | 914.50 mi (1,471.75 km) |
| Heilbad Heiligenstadt to Karnobat | 993.55 mi (1,598.97 km) |
| Heilbad Heiligenstadt to Kavarna | 1,008.32 mi (1,622.73 km) |
| Heilbad Heiligenstadt to Kazanlak | 936.80 mi (1,507.64 km) |
| Heilbad Heiligenstadt to Knezha | 846.66 mi (1,362.57 km) |
| Heilbad Heiligenstadt to Kostinbrod | 851.08 mi (1,369.67 km) |
| Heilbad Heiligenstadt to Kozloduy | 820.45 mi (1,320.39 km) |
| Heilbad Heiligenstadt to Kyustendil | 861.73 mi (1,386.82 km) |
| Heilbad Heiligenstadt to Levski | 890.83 mi (1,433.65 km) |
| Heilbad Heiligenstadt to Lom | 800.87 mi (1,288.88 km) |
| Heilbad Heiligenstadt to Lovech | 887.05 mi (1,427.56 km) |
| Heilbad Heiligenstadt to Lukovit | 864.34 mi (1,391.02 km) |
| Heilbad Heiligenstadt to Lyaskovets | 924.80 mi (1,488.32 km) |
| Heilbad Heiligenstadt to Mezdra | 850.54 mi (1,368.82 km) |
| Heilbad Heiligenstadt to Momchilgrad | 992.14 mi (1,596.69 km) |
