| Cities | Distance |
|---|---|
| Kocaeli to Karlovo | 293.84 mi (472.90 km) |
| Kocaeli to Karnobat | 199.03 mi (320.31 km) |
| Kocaeli to Kavarna | 201.61 mi (324.45 km) |
| Kocaeli to Kazanlak | 265.92 mi (427.96 km) |
| Kocaeli to Knezha | 353.62 mi (569.10 km) |
| Kocaeli to Kostinbrod | 373.10 mi (600.44 km) |
| Kocaeli to Kozloduy | 378.68 mi (609.43 km) |
| Kocaeli to Kyustendil | 388.55 mi (625.32 km) |
| Kocaeli to Levski | 304.21 mi (489.59 km) |
| Kocaeli to Lom | 401.49 mi (646.13 km) |
| Kocaeli to Lovech | 313.40 mi (504.37 km) |
| Kocaeli to Lukovit | 339.90 mi (547.01 km) |
| Kocaeli to Lyaskovets | 269.59 mi (433.86 km) |
| Kocaeli to Mezdra | 359.41 mi (578.41 km) |
| Kocaeli to Momchilgrad | 240.12 mi (386.43 km) |