| Niederkassel to Koscielisko | 579.09 mi (931.95 km) |
| Niederkassel to Koscierzyna | 513.49 mi (826.38 km) |
| Niederkassel to Kostrzyn | 450.19 mi (724.50 km) |
| Niederkassel to Kostrzyn nad Odra | 348.82 mi (561.37 km) |
| Niederkassel to Koszalin | 449.72 mi (723.75 km) |
| Niederkassel to Kowary | 384.03 mi (618.04 km) |
| Niederkassel to Kozienice | 630.39 mi (1,014.51 km) |
| Niederkassel to Kozuchow | 375.56 mi (604.41 km) |
| Niederkassel to Kozy | 537.69 mi (865.34 km) |
| Niederkassel to Krakow | 569.50 mi (916.52 km) |
| Niederkassel to Krapkowice | 479.24 mi (771.26 km) |
| Niederkassel to Krasnik | 660.96 mi (1,063.72 km) |
| Niederkassel to Krasnystaw | 702.43 mi (1,130.45 km) |
| Niederkassel to Krosno | 653.79 mi (1,052.17 km) |
| Niederkassel to Krosno Odrzanskie | 357.35 mi (575.09 km) |
