| Hildburghausen to Karlovo | 854.86 mi (1,375.76 km) |
| Hildburghausen to Karnobat | 937.37 mi (1,508.56 km) |
| Hildburghausen to Kavarna | 956.33 mi (1,539.07 km) |
| Hildburghausen to Kazanlak | 878.06 mi (1,413.09 km) |
| Hildburghausen to Knezha | 787.82 mi (1,267.87 km) |
| Hildburghausen to Kostinbrod | 789.19 mi (1,270.08 km) |
| Hildburghausen to Kozloduy | 761.73 mi (1,225.88 km) |
| Hildburghausen to Kyustendil | 797.96 mi (1,284.20 km) |
| Hildburghausen to Levski | 833.45 mi (1,341.30 km) |
| Hildburghausen to Lom | 741.37 mi (1,193.12 km) |
| Hildburghausen to Lovech | 828.38 mi (1,333.15 km) |
| Hildburghausen to Lukovit | 804.90 mi (1,295.37 km) |
| Hildburghausen to Lyaskovets | 867.72 mi (1,396.46 km) |
| Hildburghausen to Mezdra | 790.20 mi (1,271.70 km) |
| Hildburghausen to Momchilgrad | 931.20 mi (1,498.62 km) |
