| Watford to Kelkheim (Taunus) | 399.19 mi (642.43 km) |
| Watford to Kelsterbach | 404.31 mi (650.67 km) |
| Watford to Kemberg | 557.03 mi (896.45 km) |
| Watford to Kempen | 293.63 mi (472.56 km) |
| Watford to Kempten | 549.37 mi (884.12 km) |
| Watford to Kenzingen | 434.52 mi (699.29 km) |
| Watford to Kerpen | 311.22 mi (500.86 km) |
| Watford to Ketsch | 422.68 mi (680.23 km) |
| Watford to Kevelaer | 285.04 mi (458.73 km) |
| Watford to Kiel | 474.79 mi (764.10 km) |
| Watford to Kierspe | 344.98 mi (555.20 km) |
| Watford to Kirchhain | 406.71 mi (654.54 km) |
| Watford to Kirchheim bei Munchen | 590.69 mi (950.62 km) |
| Watford to Kirchheim unter Teck | 482.38 mi (776.32 km) |
| Watford to Kirchhundem | 367.47 mi (591.38 km) |
