| Letchworth to Juprelle | 263.46 mi (423.99 km) |
| Letchworth to Jurbise | 205.81 mi (331.21 km) |
| Letchworth to Kalmthout | 205.32 mi (330.44 km) |
| Letchworth to Kampenhout | 217.82 mi (350.55 km) |
| Letchworth to Kapelle-op-den-Bos | 208.54 mi (335.61 km) |
| Letchworth to Kapellen | 205.04 mi (329.98 km) |
| Letchworth to Kasterlee | 227.81 mi (366.62 km) |
| Letchworth to Keerbergen | 219.66 mi (353.50 km) |
| Letchworth to Kinrooi | 262.74 mi (422.84 km) |
| Letchworth to Knokke-Heist | 157.00 mi (252.67 km) |
| Letchworth to Koekelare | 150.97 mi (242.96 km) |
| Letchworth to Koekelberg | 211.02 mi (339.61 km) |
| Letchworth to Koksijde | 137.82 mi (221.80 km) |
| Letchworth to Kontich | 209.31 mi (336.84 km) |
| Letchworth to Kortemark | 155.34 mi (249.99 km) |
