| Flensburg to Juprelle | 324.76 mi (522.65 km) |
| Flensburg to Jurbise | 373.09 mi (600.43 km) |
| Flensburg to Kalmthout | 312.39 mi (502.75 km) |
| Flensburg to Kampenhout | 334.46 mi (538.26 km) |
| Flensburg to Kapelle-op-den-Bos | 334.98 mi (539.10 km) |
| Flensburg to Kapellen | 316.87 mi (509.96 km) |
| Flensburg to Kasterlee | 307.00 mi (494.07 km) |
| Flensburg to Keerbergen | 328.92 mi (529.35 km) |
| Flensburg to Kinrooi | 294.54 mi (474.02 km) |
| Flensburg to Knokke-Heist | 348.64 mi (561.08 km) |
| Flensburg to Koekelare | 370.31 mi (595.96 km) |
| Flensburg to Koekelberg | 344.16 mi (553.88 km) |
| Flensburg to Koksijde | 379.92 mi (611.42 km) |
| Flensburg to Kontich | 326.38 mi (525.26 km) |
| Flensburg to Kortemark | 371.49 mi (597.86 km) |
