| Gretna to Jozefow | 5,419.24 mi (8,721.42 km) |
| Gretna to Kalisz | 5,321.37 mi (8,563.92 km) |
| Gretna to Kamien Pomorski | 5,124.56 mi (8,247.18 km) |
| Gretna to Kamienna Gora | 5,281.40 mi (8,499.59 km) |
| Gretna to Karczew | 5,421.78 mi (8,725.50 km) |
| Gretna to Kartuzy | 5,231.10 mi (8,418.64 km) |
| Gretna to Katowice | 5,411.35 mi (8,708.72 km) |
| Gretna to Kedzierzyn-Kozle | 5,377.97 mi (8,655.01 km) |
| Gretna to Kepno | 5,335.37 mi (8,586.44 km) |
| Gretna to Ketrzyn | 5,348.34 mi (8,607.32 km) |
| Gretna to Kety | 5,432.68 mi (8,743.05 km) |
| Gretna to Kielce | 5,447.03 mi (8,766.15 km) |
| Gretna to Kielczow | 5,311.06 mi (8,547.33 km) |
| Gretna to Klobuck | 5,383.74 mi (8,664.29 km) |
| Gretna to Klodzko | 5,317.07 mi (8,557.00 km) |
