| Differdange to Karlovo | 1,019.60 mi (1,640.88 km) |
| Differdange to Karnobat | 1,112.31 mi (1,790.09 km) |
| Differdange to Kavarna | 1,142.28 mi (1,838.32 km) |
| Differdange to Kazanlak | 1,045.60 mi (1,682.73 km) |
| Differdange to Knezha | 956.61 mi (1,539.52 km) |
| Differdange to Kostinbrod | 946.47 mi (1,523.19 km) |
| Differdange to Kozloduy | 931.43 mi (1,498.98 km) |
| Differdange to Kyustendil | 946.53 mi (1,523.29 km) |
| Differdange to Levski | 1,006.20 mi (1,619.33 km) |
| Differdange to Lom | 908.83 mi (1,462.63 km) |
| Differdange to Lovech | 997.05 mi (1,604.59 km) |
| Differdange to Lukovit | 971.31 mi (1,563.17 km) |
| Differdange to Lyaskovets | 1,040.87 mi (1,675.12 km) |
| Differdange to Mezdra | 953.57 mi (1,534.62 km) |
| Differdange to Momchilgrad | 1,089.73 mi (1,753.75 km) |
