| Karlsdorf-Neuthard to Karlovo | 898.95 mi (1,446.72 km) |
| Karlsdorf-Neuthard to Karnobat | 990.64 mi (1,594.28 km) |
| Karlsdorf-Neuthard to Kavarna | 1,019.97 mi (1,641.48 km) |
| Karlsdorf-Neuthard to Kazanlak | 924.63 mi (1,488.06 km) |
| Karlsdorf-Neuthard to Knezha | 835.38 mi (1,344.42 km) |
| Karlsdorf-Neuthard to Kostinbrod | 826.75 mi (1,330.52 km) |
| Karlsdorf-Neuthard to Kozloduy | 810.06 mi (1,303.67 km) |
| Karlsdorf-Neuthard to Kyustendil | 828.29 mi (1,333.01 km) |
| Karlsdorf-Neuthard to Levski | 884.63 mi (1,423.68 km) |
| Karlsdorf-Neuthard to Lom | 787.68 mi (1,267.64 km) |
| Karlsdorf-Neuthard to Lovech | 875.89 mi (1,409.60 km) |
| Karlsdorf-Neuthard to Lukovit | 850.38 mi (1,368.55 km) |
| Karlsdorf-Neuthard to Lyaskovets | 919.30 mi (1,479.47 km) |
| Karlsdorf-Neuthard to Mezdra | 832.99 mi (1,340.57 km) |
| Karlsdorf-Neuthard to Momchilgrad | 970.10 mi (1,561.22 km) |
