| Sint-Niklaas to Kalisz | 600.83 mi (966.95 km) |
| Sint-Niklaas to Kamien Pomorski | 486.36 mi (782.72 km) |
| Sint-Niklaas to Kamienna Gora | 517.82 mi (833.36 km) |
| Sint-Niklaas to Karczew | 735.20 mi (1,183.19 km) |
| Sint-Niklaas to Kartuzy | 626.35 mi (1,008.01 km) |
| Sint-Niklaas to Katowice | 652.93 mi (1,050.79 km) |
| Sint-Niklaas to Kedzierzyn-Kozle | 616.46 mi (992.09 km) |
| Sint-Niklaas to Kepno | 598.46 mi (963.13 km) |
| Sint-Niklaas to Ketrzyn | 748.91 mi (1,205.25 km) |
| Sint-Niklaas to Kety | 666.98 mi (1,073.40 km) |
| Sint-Niklaas to Kielce | 715.91 mi (1,152.15 km) |
| Sint-Niklaas to Kielczow | 564.60 mi (908.64 km) |
| Sint-Niklaas to Klobuck | 642.10 mi (1,033.36 km) |
| Sint-Niklaas to Klodzko | 548.26 mi (882.35 km) |
| Sint-Niklaas to Kluczbork | 610.58 mi (982.63 km) |
