| Bad Salzdetfurth to Karlovo | 947.21 mi (1,524.38 km) |
| Bad Salzdetfurth to Karnobat | 1,023.29 mi (1,646.82 km) |
| Bad Salzdetfurth to Kavarna | 1,034.71 mi (1,665.21 km) |
| Bad Salzdetfurth to Kazanlak | 968.72 mi (1,559.01 km) |
| Bad Salzdetfurth to Knezha | 878.81 mi (1,414.31 km) |
| Bad Salzdetfurth to Kostinbrod | 885.77 mi (1,425.51 km) |
| Bad Salzdetfurth to Kozloduy | 852.56 mi (1,372.06 km) |
| Bad Salzdetfurth to Kyustendil | 898.05 mi (1,445.28 km) |
| Bad Salzdetfurth to Levski | 921.71 mi (1,483.35 km) |
| Bad Salzdetfurth to Lom | 833.65 mi (1,341.64 km) |
| Bad Salzdetfurth to Lovech | 918.98 mi (1,478.95 km) |
| Bad Salzdetfurth to Lukovit | 896.95 mi (1,443.50 km) |
| Bad Salzdetfurth to Lyaskovets | 955.38 mi (1,537.53 km) |
| Bad Salzdetfurth to Mezdra | 883.93 mi (1,422.56 km) |
| Bad Salzdetfurth to Momchilgrad | 1,025.82 mi (1,650.90 km) |
