| Karlstad to Karlovo | 1,252.30 mi (2,015.39 km) |
| Karlstad to Karnobat | 1,291.26 mi (2,078.07 km) |
| Karlstad to Kavarna | 1,267.17 mi (2,039.31 km) |
| Karlstad to Kazanlak | 1,263.94 mi (2,034.11 km) |
| Karlstad to Knezha | 1,184.57 mi (1,906.37 km) |
| Karlstad to Kostinbrod | 1,216.46 mi (1,957.71 km) |
| Karlstad to Kozloduy | 1,160.47 mi (1,867.60 km) |
| Karlstad to Kyustendil | 1,244.49 mi (2,002.82 km) |
| Karlstad to Levski | 1,210.61 mi (1,948.29 km) |
| Karlstad to Lom | 1,150.11 mi (1,850.92 km) |
| Karlstad to Lovech | 1,218.72 mi (1,961.35 km) |
| Karlstad to Lukovit | 1,205.56 mi (1,940.16 km) |
| Karlstad to Lyaskovets | 1,238.05 mi (1,992.45 km) |
| Karlstad to Mezdra | 1,201.60 mi (1,933.79 km) |
| Karlstad to Momchilgrad | 1,334.98 mi (2,148.44 km) |
