| Holyhead to Kaneohe (Hawaii) | 7,030.39 mi (11,314.32 km) |
| Holyhead to Kankakee (Illinois) | 3,767.95 mi (6,063.93 km) |
| Holyhead to Kannapolis (North Carolina) | 3,754.27 mi (6,041.91 km) |
| Holyhead to Kansas City (Kansas) | 4,122.36 mi (6,634.30 km) |
| Holyhead to Kansas City (Missouri) | 4,115.29 mi (6,622.91 km) |
| Holyhead to Kapaa (Hawaii) | 7,011.67 mi (11,284.18 km) |
| Holyhead to Kapolei (Hawaii) | 7,039.69 mi (11,329.29 km) |
| Holyhead to Katy (Texas) | 4,643.08 mi (7,472.32 km) |
| Holyhead to Kaukauna (Wisconsin) | 3,634.86 mi (5,849.74 km) |
| Holyhead to Kaysville (Utah) | 4,622.73 mi (7,439.57 km) |
| Holyhead to Kearney (Missouri) | 4,096.57 mi (6,592.80 km) |
| Holyhead to Kearney (Nebraska) | 4,201.32 mi (6,761.37 km) |
| Holyhead to Kearns (Utah) | 4,645.26 mi (7,475.82 km) |
| Holyhead to Kearny (New Jersey) | 3,247.02 mi (5,225.58 km) |
| Holyhead to Keene (New Hampshire) | 3,078.65 mi (4,954.61 km) |
