| Hemel Hempstead to Kinston (North Carolina) | 3,835.90 mi (6,173.29 km) |
| Hemel Hempstead to Kirkland (Washington) | 4,753.43 mi (7,649.90 km) |
| Hemel Hempstead to Kirksville (Missouri) | 4,193.36 mi (6,748.56 km) |
| Hemel Hempstead to Kirkwood (Missouri) | 4,190.49 mi (6,743.95 km) |
| Hemel Hempstead to Kiryas Joel (New York) | 3,421.30 mi (5,506.05 km) |
| Hemel Hempstead to Kissimmee (Florida) | 4,334.47 mi (6,975.66 km) |
| Hemel Hempstead to Klamath Falls (Oregon) | 5,055.65 mi (8,136.29 km) |
| Hemel Hempstead to Knightdale (North Carolina) | 3,848.80 mi (6,194.04 km) |
| Hemel Hempstead to Knik-Fairview (Alaska) | 4,429.40 mi (7,128.43 km) |
| Hemel Hempstead to Knoxville (Tennessee) | 4,062.07 mi (6,537.27 km) |
| Hemel Hempstead to Kokomo (Indiana) | 3,935.10 mi (6,332.94 km) |
| Hemel Hempstead to Kuna (Idaho) | 4,827.67 mi (7,769.39 km) |
| Hemel Hempstead to Kyle (Texas) | 4,914.75 mi (7,909.52 km) |
| Hemel Hempstead to La Cañada Flintridge (California) | 5,407.86 mi (8,703.11 km) |
| Hemel Hempstead to La Crescenta-Montrose (California) | 5,407.70 mi (8,702.85 km) |
