| Holyhead to Kinston (North Carolina) | 3,641.10 mi (5,859.78 km) |
| Holyhead to Kirkland (Washington) | 4,559.38 mi (7,337.62 km) |
| Holyhead to Kirksville (Missouri) | 3,988.59 mi (6,419.01 km) |
| Holyhead to Kirkwood (Missouri) | 3,986.69 mi (6,415.96 km) |
| Holyhead to Kiryas Joel (New York) | 3,222.83 mi (5,186.64 km) |
| Holyhead to Kissimmee (Florida) | 4,143.41 mi (6,668.17 km) |
| Holyhead to Klamath Falls (Oregon) | 4,857.80 mi (7,817.87 km) |
| Holyhead to Knightdale (North Carolina) | 3,652.80 mi (5,878.61 km) |
| Holyhead to Knik-Fairview (Alaska) | 4,275.61 mi (6,880.93 km) |
| Holyhead to Knoxville (Tennessee) | 3,862.39 mi (6,215.91 km) |
| Holyhead to Kokomo (Indiana) | 3,731.83 mi (6,005.80 km) |
| Holyhead to Kuna (Idaho) | 4,627.49 mi (7,447.22 km) |
| Holyhead to Kyle (Texas) | 4,711.62 mi (7,582.62 km) |
| Holyhead to La Cañada Flintridge (California) | 5,204.73 mi (8,376.21 km) |
| Holyhead to La Crescenta-Montrose (California) | 5,204.59 mi (8,375.97 km) |
