| Herk-de-Stad to Karnobat | 1,174.57 mi (1,890.29 km) |
| Herk-de-Stad to Kavarna | 1,198.35 mi (1,928.55 km) |
| Herk-de-Stad to Kazanlak | 1,111.36 mi (1,788.56 km) |
| Herk-de-Stad to Knezha | 1,021.47 mi (1,643.90 km) |
| Herk-de-Stad to Kostinbrod | 1,016.44 mi (1,635.80 km) |
| Herk-de-Stad to Kozloduy | 995.76 mi (1,602.52 km) |
| Herk-de-Stad to Kyustendil | 1,019.99 mi (1,641.51 km) |
| Herk-de-Stad to Levski | 1,069.29 mi (1,720.85 km) |
| Herk-de-Stad to Lom | 974.14 mi (1,567.72 km) |
| Herk-de-Stad to Lovech | 1,062.11 mi (1,709.30 km) |
| Herk-de-Stad to Lukovit | 1,037.35 mi (1,669.45 km) |
| Herk-de-Stad to Lyaskovets | 1,103.86 mi (1,776.49 km) |
| Herk-de-Stad to Mezdra | 1,020.93 mi (1,643.02 km) |
| Herk-de-Stad to Momchilgrad | 1,159.69 mi (1,866.34 km) |
| Herk-de-Stad to Montana | 991.02 mi (1,594.89 km) |
