| Constanta to Jozefow | 646.81 mi (1,040.95 km) |
| Constanta to Kalisz | 715.17 mi (1,150.95 km) |
| Constanta to Kamien Pomorski | 920.10 mi (1,480.75 km) |
| Constanta to Kamienna Gora | 743.46 mi (1,196.48 km) |
| Constanta to Karczew | 643.57 mi (1,035.73 km) |
| Constanta to Kartuzy | 843.54 mi (1,357.55 km) |
| Constanta to Katowice | 616.60 mi (992.32 km) |
| Constanta to Kedzierzyn-Kozle | 648.45 mi (1,043.57 km) |
| Constanta to Kepno | 696.38 mi (1,120.72 km) |
| Constanta to Ketrzyn | 758.61 mi (1,220.87 km) |
| Constanta to Kety | 593.80 mi (955.63 km) |
| Constanta to Kielce | 594.36 mi (956.54 km) |
| Constanta to Kielczow | 717.13 mi (1,154.11 km) |
| Constanta to Klobuck | 648.73 mi (1,044.02 km) |
| Constanta to Klodzko | 707.60 mi (1,138.78 km) |
