| Portsmouth to Juprelle | 289.32 mi (465.61 km) |
| Portsmouth to Jurbise | 220.61 mi (355.04 km) |
| Portsmouth to Kalmthout | 244.22 mi (393.03 km) |
| Portsmouth to Kampenhout | 245.88 mi (395.71 km) |
| Portsmouth to Kapelle-op-den-Bos | 237.99 mi (383.01 km) |
| Portsmouth to Kapellen | 242.25 mi (389.86 km) |
| Portsmouth to Kasterlee | 264.06 mi (424.97 km) |
| Portsmouth to Keerbergen | 249.46 mi (401.47 km) |
| Portsmouth to Kinrooi | 297.84 mi (479.33 km) |
| Portsmouth to Knokke-Heist | 193.43 mi (311.30 km) |
| Portsmouth to Koekelare | 178.13 mi (286.67 km) |
| Portsmouth to Koekelberg | 236.51 mi (380.62 km) |
| Portsmouth to Koksijde | 163.91 mi (263.79 km) |
| Portsmouth to Kontich | 241.93 mi (389.34 km) |
| Portsmouth to Kortemark | 180.60 mi (290.65 km) |
