| Hackettstown to Kaneohe (Hawaii) | 4,908.02 mi (7,898.70 km) |
| Hackettstown to Kankakee (Illinois) | 679.71 mi (1,093.89 km) |
| Hackettstown to Kannapolis (North Carolina) | 487.44 mi (784.47 km) |
| Hackettstown to Kansas City (Kansas) | 1,058.88 mi (1,704.10 km) |
| Hackettstown to Kansas City (Missouri) | 1,048.93 mi (1,688.09 km) |
| Hackettstown to Kapaa (Hawaii) | 4,958.72 mi (7,980.29 km) |
| Hackettstown to Kapolei (Hawaii) | 4,924.97 mi (7,925.97 km) |
| Hackettstown to Katy (Texas) | 1,403.88 mi (2,259.32 km) |
| Hackettstown to Kaukauna (Wisconsin) | 722.58 mi (1,162.87 km) |
| Hackettstown to Kaysville (Utah) | 1,922.51 mi (3,093.99 km) |
| Hackettstown to Kearney (Missouri) | 1,035.35 mi (1,666.23 km) |
| Hackettstown to Kearney (Nebraska) | 1,265.14 mi (2,036.05 km) |
| Hackettstown to Kearns (Utah) | 1,931.38 mi (3,108.26 km) |
| Hackettstown to Kearny (New Jersey) | 37.55 mi (60.44 km) |
| Hackettstown to Keene (New Hampshire) | 194.49 mi (313.00 km) |
