| Groningen to Koscielisko | 635.52 mi (1,022.76 km) |
| Groningen to Koscierzyna | 470.95 mi (757.91 km) |
| Groningen to Kostrzyn | 448.25 mi (721.39 km) |
| Groningen to Kostrzyn nad Odra | 340.16 mi (547.44 km) |
| Groningen to Koszalin | 398.78 mi (641.77 km) |
| Groningen to Kowary | 427.88 mi (688.60 km) |
| Groningen to Kozienice | 641.10 mi (1,031.75 km) |
| Groningen to Kozuchow | 393.07 mi (632.59 km) |
| Groningen to Kozy | 587.17 mi (944.96 km) |
| Groningen to Krakow | 612.24 mi (985.30 km) |
| Groningen to Krapkowice | 521.71 mi (839.61 km) |
| Groningen to Krasnik | 681.95 mi (1,097.49 km) |
| Groningen to Krasnystaw | 720.18 mi (1,159.01 km) |
| Groningen to Krosno | 696.22 mi (1,120.45 km) |
| Groningen to Krosno Odrzanskie | 366.88 mi (590.44 km) |
