| Llantwit Major to Kinston (North Carolina) | 3,716.66 mi (5,981.38 km) |
| Llantwit Major to Kirkland (Washington) | 4,691.36 mi (7,550.01 km) |
| Llantwit Major to Kirksville (Missouri) | 4,090.75 mi (6,583.43 km) |
| Llantwit Major to Kirkwood (Missouri) | 4,084.17 mi (6,572.84 km) |
| Llantwit Major to Kiryas Joel (New York) | 3,305.83 mi (5,320.22 km) |
| Llantwit Major to Kissimmee (Florida) | 4,212.36 mi (6,779.14 km) |
| Llantwit Major to Klamath Falls (Oregon) | 4,986.48 mi (8,024.97 km) |
| Llantwit Major to Knightdale (North Carolina) | 3,730.60 mi (6,003.83 km) |
| Llantwit Major to Knik-Fairview (Alaska) | 4,415.70 mi (7,106.39 km) |
| Llantwit Major to Knoxville (Tennessee) | 3,947.88 mi (6,353.50 km) |
| Llantwit Major to Kokomo (Indiana) | 3,827.40 mi (6,159.61 km) |
| Llantwit Major to Kuna (Idaho) | 4,753.51 mi (7,650.04 km) |
| Llantwit Major to Kyle (Texas) | 4,806.37 mi (7,735.10 km) |
| Llantwit Major to La Cañada Flintridge (California) | 5,325.44 mi (8,570.48 km) |
| Llantwit Major to La Crescenta-Montrose (California) | 5,325.35 mi (8,570.32 km) |
