| Watford to Kaneohe (Hawaii) | 7,206.34 mi (11,597.48 km) |
| Watford to Kankakee (Illinois) | 3,977.83 mi (6,401.70 km) |
| Watford to Kannapolis (North Carolina) | 3,956.52 mi (6,367.40 km) |
| Watford to Kansas City (Kansas) | 4,333.32 mi (6,973.80 km) |
| Watford to Kansas City (Missouri) | 4,326.20 mi (6,962.35 km) |
| Watford to Kapaa (Hawaii) | 7,184.22 mi (11,561.88 km) |
| Watford to Kapolei (Hawaii) | 7,215.15 mi (11,611.65 km) |
| Watford to Katy (Texas) | 4,850.85 mi (7,806.69 km) |
| Watford to Kaukauna (Wisconsin) | 3,845.94 mi (6,189.45 km) |
| Watford to Kaysville (Utah) | 4,832.68 mi (7,777.45 km) |
| Watford to Kearney (Missouri) | 4,307.51 mi (6,932.26 km) |
| Watford to Kearney (Nebraska) | 4,413.02 mi (7,102.07 km) |
| Watford to Kearns (Utah) | 4,855.31 mi (7,813.86 km) |
| Watford to Kearny (New Jersey) | 3,449.98 mi (5,552.21 km) |
| Watford to Keene (New Hampshire) | 3,282.82 mi (5,283.19 km) |
