| Hard to Kaneohe (Hawaii) | 7,613.30 mi (12,252.42 km) |
| Hard to Kankakee (Illinois) | 4,512.68 mi (7,262.46 km) |
| Hard to Kannapolis (North Carolina) | 4,482.23 mi (7,213.44 km) |
| Hard to Kansas City (Kansas) | 4,868.32 mi (7,834.80 km) |
| Hard to Kansas City (Missouri) | 4,861.22 mi (7,823.37 km) |
| Hard to Kapaa (Hawaii) | 7,581.15 mi (12,200.69 km) |
| Hard to Kapolei (Hawaii) | 7,620.58 mi (12,264.14 km) |
| Hard to Katy (Texas) | 5,383.77 mi (8,664.34 km) |
| Hard to Kaukauna (Wisconsin) | 4,380.87 mi (7,050.33 km) |
| Hard to Kaysville (Utah) | 5,354.40 mi (8,617.07 km) |
| Hard to Kearney (Missouri) | 4,842.51 mi (7,793.27 km) |
| Hard to Kearney (Nebraska) | 4,946.29 mi (7,960.28 km) |
| Hard to Kearns (Utah) | 5,377.43 mi (8,654.13 km) |
| Hard to Kearny (New Jersey) | 3,977.08 mi (6,400.49 km) |
| Hard to Keene (New Hampshire) | 3,811.69 mi (6,134.33 km) |
