| Watford to Kinston (North Carolina) | 3,840.70 mi (6,181.01 km) |
| Watford to Kirkland (Washington) | 4,760.68 mi (7,661.58 km) |
| Watford to Kirksville (Missouri) | 4,199.38 mi (6,758.24 km) |
| Watford to Kirkwood (Missouri) | 4,196.30 mi (6,753.30 km) |
| Watford to Kiryas Joel (New York) | 3,426.45 mi (5,514.33 km) |
| Watford to Kissimmee (Florida) | 4,338.96 mi (6,982.88 km) |
| Watford to Klamath Falls (Oregon) | 5,062.80 mi (8,147.78 km) |
| Watford to Knightdale (North Carolina) | 3,853.70 mi (6,201.94 km) |
| Watford to Knik-Fairview (Alaska) | 4,436.74 mi (7,140.25 km) |
| Watford to Knoxville (Tennessee) | 4,067.33 mi (6,545.74 km) |
| Watford to Kokomo (Indiana) | 3,940.83 mi (6,342.15 km) |
| Watford to Kuna (Idaho) | 4,834.71 mi (7,780.71 km) |
| Watford to Kyle (Texas) | 4,920.44 mi (7,918.68 km) |
| Watford to La Cañada Flintridge (California) | 5,414.70 mi (8,714.11 km) |
| Watford to La Crescenta-Montrose (California) | 5,414.53 mi (8,713.85 km) |
