| Hemel Hempstead to Karlovo | 1,333.62 mi (2,146.25 km) |
| Hemel Hempstead to Karnobat | 1,423.15 mi (2,290.34 km) |
| Hemel Hempstead to Kavarna | 1,447.85 mi (2,330.08 km) |
| Hemel Hempstead to Kazanlak | 1,358.87 mi (2,186.89 km) |
| Hemel Hempstead to Knezha | 1,269.23 mi (2,042.63 km) |
| Hemel Hempstead to Kostinbrod | 1,262.08 mi (2,031.12 km) |
| Hemel Hempstead to Kozloduy | 1,243.66 mi (2,001.48 km) |
| Hemel Hempstead to Kyustendil | 1,263.62 mi (2,033.61 km) |
| Hemel Hempstead to Levski | 1,317.60 mi (2,120.48 km) |
| Hemel Hempstead to Lom | 1,221.71 mi (1,966.15 km) |
| Hemel Hempstead to Lovech | 1,309.83 mi (2,107.97 km) |
| Hemel Hempstead to Lukovit | 1,284.71 mi (2,067.54 km) |
| Hemel Hempstead to Lyaskovets | 1,352.22 mi (2,176.19 km) |
| Hemel Hempstead to Mezdra | 1,267.77 mi (2,040.27 km) |
| Hemel Hempstead to Momchilgrad | 1,405.43 mi (2,261.83 km) |
