| Welwyn Garden City to Kamen | 336.69 mi (541.85 km) |
| Welwyn Garden City to Kamenz | 614.42 mi (988.82 km) |
| Welwyn Garden City to Kamp-Lintfort | 289.02 mi (465.13 km) |
| Welwyn Garden City to Kandel | 414.12 mi (666.46 km) |
| Welwyn Garden City to Kappeln | 462.28 mi (743.97 km) |
| Welwyn Garden City to Karben | 404.09 mi (650.33 km) |
| Welwyn Garden City to Karlsdorf-Neuthard | 425.84 mi (685.32 km) |
| Welwyn Garden City to Karlsfeld | 573.18 mi (922.45 km) |
| Welwyn Garden City to Karlsruhe | 424.68 mi (683.46 km) |
| Welwyn Garden City to Kassel | 417.34 mi (671.64 km) |
| Welwyn Garden City to Kaufbeuren | 552.23 mi (888.73 km) |
| Welwyn Garden City to Kaufering | 554.82 mi (892.90 km) |
| Welwyn Garden City to Kaufungen | 422.85 mi (680.51 km) |
| Welwyn Garden City to Kehl | 418.77 mi (673.95 km) |
| Welwyn Garden City to Kelheim | 567.00 mi (912.49 km) |
