| Gretna to Juprelle | 4,876.36 mi (7,847.74 km) |
| Gretna to Jurbise | 4,816.97 mi (7,752.16 km) |
| Gretna to Kalmthout | 4,815.57 mi (7,749.91 km) |
| Gretna to Kampenhout | 4,830.80 mi (7,774.42 km) |
| Gretna to Kapelle-op-den-Bos | 4,821.44 mi (7,759.36 km) |
| Gretna to Kapellen | 4,816.03 mi (7,750.65 km) |
| Gretna to Kasterlee | 4,838.38 mi (7,786.62 km) |
| Gretna to Keerbergen | 4,832.39 mi (7,776.97 km) |
| Gretna to Kinrooi | 4,872.65 mi (7,841.77 km) |
| Gretna to Knokke-Heist | 4,769.64 mi (7,676.00 km) |
| Gretna to Koekelare | 4,763.84 mi (7,666.66 km) |
| Gretna to Koekelberg | 4,824.14 mi (7,763.70 km) |
| Gretna to Koksijde | 4,750.29 mi (7,644.86 km) |
| Gretna to Kontich | 4,821.63 mi (7,759.66 km) |
| Gretna to Kortemark | 4,768.02 mi (7,673.39 km) |
