| Houthulst to Karnobat | 1,266.52 mi (2,038.26 km) |
| Houthulst to Kavarna | 1,292.11 mi (2,079.45 km) |
| Houthulst to Kazanlak | 1,202.00 mi (1,934.43 km) |
| Houthulst to Knezha | 1,112.39 mi (1,790.22 km) |
| Houthulst to Kostinbrod | 1,105.22 mi (1,778.68 km) |
| Houthulst to Kozloduy | 1,086.85 mi (1,749.12 km) |
| Houthulst to Kyustendil | 1,107.04 mi (1,781.61 km) |
| Houthulst to Levski | 1,160.89 mi (1,868.26 km) |
| Houthulst to Lom | 1,064.85 mi (1,713.71 km) |
| Houthulst to Lovech | 1,152.99 mi (1,855.55 km) |
| Houthulst to Lukovit | 1,127.83 mi (1,815.07 km) |
| Houthulst to Lyaskovets | 1,195.52 mi (1,924.00 km) |
| Houthulst to Mezdra | 1,110.86 mi (1,787.76 km) |
| Houthulst to Momchilgrad | 1,248.57 mi (2,009.38 km) |
| Houthulst to Montana | 1,080.94 mi (1,739.60 km) |
