| Bonn to Karlovo | 1,004.32 mi (1,616.29 km) |
| Bonn to Karnobat | 1,090.99 mi (1,755.78 km) |
| Bonn to Kavarna | 1,113.64 mi (1,792.23 km) |
| Bonn to Kazanlak | 1,028.71 mi (1,655.55 km) |
| Bonn to Knezha | 938.68 mi (1,510.66 km) |
| Bonn to Kostinbrod | 935.25 mi (1,505.14 km) |
| Bonn to Kozloduy | 912.85 mi (1,469.09 km) |
| Bonn to Kyustendil | 940.16 mi (1,513.05 km) |
| Bonn to Levski | 985.99 mi (1,586.79 km) |
| Bonn to Lom | 891.52 mi (1,434.77 km) |
| Bonn to Lovech | 979.33 mi (1,576.08 km) |
| Bonn to Lukovit | 954.87 mi (1,536.71 km) |
| Bonn to Lyaskovets | 1,020.51 mi (1,642.35 km) |
| Bonn to Mezdra | 938.86 mi (1,510.95 km) |
| Bonn to Momchilgrad | 1,078.32 mi (1,735.39 km) |
