| Welwyn Garden City to Juprelle | 258.70 mi (416.34 km) |
| Welwyn Garden City to Jurbise | 199.19 mi (320.57 km) |
| Welwyn Garden City to Kalmthout | 202.10 mi (325.25 km) |
| Welwyn Garden City to Kampenhout | 213.07 mi (342.90 km) |
| Welwyn Garden City to Kapelle-op-den-Bos | 203.90 mi (328.15 km) |
| Welwyn Garden City to Kapellen | 201.55 mi (324.36 km) |
| Welwyn Garden City to Kasterlee | 224.35 mi (361.05 km) |
| Welwyn Garden City to Keerbergen | 215.17 mi (346.28 km) |
| Welwyn Garden City to Kinrooi | 259.32 mi (417.34 km) |
| Welwyn Garden City to Knokke-Heist | 152.84 mi (245.97 km) |
| Welwyn Garden City to Koekelare | 145.31 mi (233.85 km) |
| Welwyn Garden City to Koekelberg | 205.85 mi (331.28 km) |
| Welwyn Garden City to Koksijde | 131.77 mi (212.07 km) |
| Welwyn Garden City to Kontich | 205.14 mi (330.14 km) |
| Welwyn Garden City to Kortemark | 149.48 mi (240.56 km) |
