| Konstancin-Jeziorna to Karlovo | 674.47 mi (1,085.45 km) |
| Konstancin-Jeziorna to Karnobat | 707.75 mi (1,139.01 km) |
| Konstancin-Jeziorna to Kavarna | 684.46 mi (1,101.53 km) |
| Konstancin-Jeziorna to Kazanlak | 683.81 mi (1,100.49 km) |
| Konstancin-Jeziorna to Knezha | 608.69 mi (979.59 km) |
| Konstancin-Jeziorna to Kostinbrod | 647.66 mi (1,042.31 km) |
| Konstancin-Jeziorna to Kozloduy | 586.02 mi (943.11 km) |
| Konstancin-Jeziorna to Kyustendil | 681.06 mi (1,096.05 km) |
| Konstancin-Jeziorna to Levski | 630.28 mi (1,014.33 km) |
| Konstancin-Jeziorna to Lom | 578.86 mi (931.59 km) |
| Konstancin-Jeziorna to Lovech | 640.42 mi (1,030.66 km) |
| Konstancin-Jeziorna to Lukovit | 629.84 mi (1,013.62 km) |
| Konstancin-Jeziorna to Lyaskovets | 656.31 mi (1,056.24 km) |
| Konstancin-Jeziorna to Mezdra | 628.74 mi (1,011.86 km) |
| Konstancin-Jeziorna to Momchilgrad | 756.42 mi (1,217.34 km) |
