| Euskirchen to Karlovo | 1,014.12 mi (1,632.06 km) |
| Euskirchen to Karnobat | 1,101.46 mi (1,772.63 km) |
| Euskirchen to Kavarna | 1,124.85 mi (1,810.27 km) |
| Euskirchen to Kazanlak | 1,038.70 mi (1,671.62 km) |
| Euskirchen to Knezha | 948.73 mi (1,526.84 km) |
| Euskirchen to Kostinbrod | 944.57 mi (1,520.14 km) |
| Euskirchen to Kozloduy | 922.96 mi (1,485.36 km) |
| Euskirchen to Kyustendil | 948.93 mi (1,527.16 km) |
| Euskirchen to Levski | 996.30 mi (1,603.40 km) |
| Euskirchen to Lom | 901.48 mi (1,450.80 km) |
| Euskirchen to Lovech | 989.38 mi (1,592.25 km) |
| Euskirchen to Lukovit | 964.77 mi (1,552.64 km) |
| Euskirchen to Lyaskovets | 1,030.85 mi (1,659.00 km) |
| Euskirchen to Mezdra | 948.57 mi (1,526.57 km) |
| Euskirchen to Momchilgrad | 1,087.73 mi (1,750.53 km) |
