| Watford to Kingswinford | 95.09 mi (153.03 km) |
| Watford to Kingswood | 91.60 mi (147.42 km) |
| Watford to Kippax | 151.51 mi (243.84 km) |
| Watford to Kirk of Shotts | 319.80 mi (514.67 km) |
| Watford to Kirkby | 163.91 mi (263.79 km) |
| Watford to Kirkby in Ashfield | 106.00 mi (170.60 km) |
| Watford to Kirkcaldy | 327.83 mi (527.60 km) |
| Watford to Kirkintilloch | 333.21 mi (536.26 km) |
| Watford to Kirkstall | 157.60 mi (253.64 km) |
| Watford to Kirkwall | 516.02 mi (830.46 km) |
| Watford to Knaresborough | 168.64 mi (271.39 km) |
| Watford to Knottingley | 146.08 mi (235.09 km) |
| Watford to Knowle | 76.11 mi (122.48 km) |
| Watford to Knowsley | 161.26 mi (259.52 km) |
| Watford to Knutsford | 140.93 mi (226.81 km) |
