| Boussu to Kalisz | 625.49 mi (1,006.63 km) |
| Boussu to Kamien Pomorski | 524.35 mi (843.86 km) |
| Boussu to Kamienna Gora | 536.51 mi (863.43 km) |
| Boussu to Karczew | 761.35 mi (1,225.28 km) |
| Boussu to Kartuzy | 662.98 mi (1,066.96 km) |
| Boussu to Katowice | 669.97 mi (1,078.22 km) |
| Boussu to Kedzierzyn-Kozle | 633.52 mi (1,019.55 km) |
| Boussu to Kepno | 620.57 mi (998.71 km) |
| Boussu to Ketrzyn | 782.95 mi (1,260.03 km) |
| Boussu to Kety | 682.25 mi (1,097.98 km) |
| Boussu to Kielce | 736.59 mi (1,185.43 km) |
| Boussu to Kielczow | 585.78 mi (942.71 km) |
| Boussu to Klobuck | 662.47 mi (1,066.14 km) |
| Boussu to Klodzko | 565.01 mi (909.29 km) |
| Boussu to Kluczbork | 631.10 mi (1,015.66 km) |
