| London Colney to Kinston (North Carolina) | 3,843.37 mi (6,185.31 km) |
| London Colney to Kirkland (Washington) | 4,759.32 mi (7,659.38 km) |
| London Colney to Kirksville (Missouri) | 4,200.58 mi (6,760.18 km) |
| London Colney to Kirkwood (Missouri) | 4,197.80 mi (6,755.70 km) |
| London Colney to Kiryas Joel (New York) | 3,428.75 mi (5,518.04 km) |
| London Colney to Kissimmee (Florida) | 4,341.94 mi (6,987.67 km) |
| London Colney to Klamath Falls (Oregon) | 5,061.81 mi (8,146.20 km) |
| London Colney to Knightdale (North Carolina) | 3,856.26 mi (6,206.06 km) |
| London Colney to Knik-Fairview (Alaska) | 4,433.13 mi (7,134.44 km) |
| London Colney to Knoxville (Tennessee) | 4,069.50 mi (6,549.23 km) |
| London Colney to Kokomo (Indiana) | 3,942.44 mi (6,344.74 km) |
| London Colney to Kuna (Idaho) | 4,834.02 mi (7,779.60 km) |
| London Colney to Kyle (Texas) | 4,922.09 mi (7,921.33 km) |
| London Colney to La Cañada Flintridge (California) | 5,414.49 mi (8,713.78 km) |
| London Colney to La Crescenta-Montrose (California) | 5,414.32 mi (8,713.51 km) |
