| Helena to Karlovo | 5,727.99 mi (9,218.31 km) |
| Helena to Karnobat | 5,779.91 mi (9,301.86 km) |
| Helena to Kavarna | 5,760.99 mi (9,271.41 km) |
| Helena to Kazanlak | 5,743.82 mi (9,243.79 km) |
| Helena to Knezha | 5,658.55 mi (9,106.56 km) |
| Helena to Kostinbrod | 5,678.67 mi (9,138.93 km) |
| Helena to Kozloduy | 5,632.96 mi (9,065.38 km) |
| Helena to Kyustendil | 5,697.47 mi (9,169.19 km) |
| Helena to Levski | 5,691.75 mi (9,159.98 km) |
| Helena to Lom | 5,618.37 mi (9,041.89 km) |
| Helena to Lovech | 5,695.96 mi (9,166.76 km) |
| Helena to Lukovit | 5,678.74 mi (9,139.06 km) |
| Helena to Lyaskovets | 5,721.79 mi (9,208.33 km) |
| Helena to Mezdra | 5,670.43 mi (9,125.67 km) |
| Helena to Momchilgrad | 5,810.39 mi (9,350.91 km) |
