| Kalkar to Kalisz | 503.69 mi (810.60 km) |
| Kalkar to Kamien Pomorski | 385.61 mi (620.57 km) |
| Kalkar to Kamienna Gora | 425.97 mi (685.53 km) |
| Kalkar to Karczew | 636.84 mi (1,024.90 km) |
| Kalkar to Kartuzy | 525.41 mi (845.56 km) |
| Kalkar to Katowice | 561.75 mi (904.05 km) |
| Kalkar to Kedzierzyn-Kozle | 525.47 mi (845.66 km) |
| Kalkar to Kepno | 503.16 mi (809.76 km) |
| Kalkar to Ketrzyn | 647.93 mi (1,042.74 km) |
| Kalkar to Kety | 577.45 mi (929.32 km) |
| Kalkar to Kielce | 621.29 mi (999.88 km) |
| Kalkar to Kielczow | 470.21 mi (756.73 km) |
| Kalkar to Klobuck | 548.00 mi (881.93 km) |
| Kalkar to Klodzko | 458.07 mi (737.19 km) |
| Kalkar to Kluczbork | 516.50 mi (831.22 km) |
