| Thorne to Karlovo | 1,397.26 mi (2,248.67 km) |
| Thorne to Karnobat | 1,481.09 mi (2,383.58 km) |
| Thorne to Kavarna | 1,498.75 mi (2,412.01 km) |
| Thorne to Kazanlak | 1,421.03 mi (2,286.93 km) |
| Thorne to Knezha | 1,330.83 mi (2,141.77 km) |
| Thorne to Kostinbrod | 1,329.35 mi (2,139.39 km) |
| Thorne to Kozloduy | 1,304.83 mi (2,099.92 km) |
| Thorne to Kyustendil | 1,334.83 mi (2,148.21 km) |
| Thorne to Levski | 1,377.00 mi (2,216.07 km) |
| Thorne to Lom | 1,284.05 mi (2,066.47 km) |
| Thorne to Lovech | 1,371.45 mi (2,207.14 km) |
| Thorne to Lukovit | 1,347.53 mi (2,168.64 km) |
| Thorne to Lyaskovets | 1,411.33 mi (2,271.31 km) |
| Thorne to Mezdra | 1,332.12 mi (2,143.84 km) |
| Thorne to Momchilgrad | 1,472.21 mi (2,369.29 km) |
