| Thornton Heath to Kinston (North Carolina) | 3,857.27 mi (6,207.68 km) |
| Thornton Heath to Kirkland (Washington) | 4,782.16 mi (7,696.14 km) |
| Thornton Heath to Kirksville (Missouri) | 4,218.73 mi (6,789.39 km) |
| Thornton Heath to Kirkwood (Missouri) | 4,215.20 mi (6,783.71 km) |
| Thornton Heath to Kiryas Joel (New York) | 3,443.84 mi (5,542.33 km) |
| Thornton Heath to Kissimmee (Florida) | 4,354.76 mi (7,008.31 km) |
| Thornton Heath to Klamath Falls (Oregon) | 5,084.17 mi (8,182.18 km) |
| Thornton Heath to Knightdale (North Carolina) | 3,870.52 mi (6,229.01 km) |
| Thornton Heath to Knik-Fairview (Alaska) | 4,457.02 mi (7,172.89 km) |
| Thornton Heath to Knoxville (Tennessee) | 4,084.99 mi (6,574.16 km) |
| Thornton Heath to Kokomo (Indiana) | 3,959.53 mi (6,372.25 km) |
| Thornton Heath to Kuna (Idaho) | 4,855.96 mi (7,814.91 km) |
| Thornton Heath to Kyle (Texas) | 4,939.07 mi (7,948.67 km) |
| Thornton Heath to La Cañada Flintridge (California) | 5,435.63 mi (8,747.80 km) |
| Thornton Heath to La Crescenta-Montrose (California) | 5,435.47 mi (8,747.54 km) |
