| Sint-Niklaas to Karnobat | 1,222.10 mi (1,966.78 km) |
| Sint-Niklaas to Kavarna | 1,245.83 mi (2,004.97 km) |
| Sint-Niklaas to Kazanlak | 1,158.80 mi (1,864.92 km) |
| Sint-Niklaas to Knezha | 1,068.94 mi (1,720.30 km) |
| Sint-Niklaas to Kostinbrod | 1,063.65 mi (1,711.78 km) |
| Sint-Niklaas to Kozloduy | 1,043.24 mi (1,678.93 km) |
| Sint-Niklaas to Kyustendil | 1,066.91 mi (1,717.02 km) |
| Sint-Niklaas to Levski | 1,116.80 mi (1,797.32 km) |
| Sint-Niklaas to Lom | 1,021.59 mi (1,644.08 km) |
| Sint-Niklaas to Lovech | 1,109.58 mi (1,785.70 km) |
| Sint-Niklaas to Lukovit | 1,084.78 mi (1,745.78 km) |
| Sint-Niklaas to Lyaskovets | 1,151.38 mi (1,852.97 km) |
| Sint-Niklaas to Mezdra | 1,068.30 mi (1,719.26 km) |
| Sint-Niklaas to Momchilgrad | 1,206.93 mi (1,942.37 km) |
| Sint-Niklaas to Montana | 1,038.38 mi (1,671.12 km) |
