| Hackettstown to Kilgore (Texas) | 1,251.01 mi (2,013.31 km) |
| Hackettstown to Killeen (Texas) | 1,441.93 mi (2,320.57 km) |
| Hackettstown to King City (California) | 2,493.97 mi (4,013.66 km) |
| Hackettstown to King of Prussia (Pennsylvania) | 59.97 mi (96.51 km) |
| Hackettstown to Kingman (Arizona) | 2,149.34 mi (3,459.03 km) |
| Hackettstown to Kings Mountain (North Carolina) | 525.76 mi (846.14 km) |
| Hackettstown to Kings Park (New York) | 82.49 mi (132.75 km) |
| Hackettstown to Kings Park West (Virginia) | 192.40 mi (309.64 km) |
| Hackettstown to Kingsburg (California) | 2,404.76 mi (3,870.08 km) |
| Hackettstown to Kingsland (Georgia) | 793.00 mi (1,276.22 km) |
| Hackettstown to Kingsport (Tennessee) | 512.41 mi (824.64 km) |
| Hackettstown to Kingston (New York) | 85.84 mi (138.14 km) |
| Hackettstown to Kingston (Pennsylvania) | 62.19 mi (100.09 km) |
| Hackettstown to Kingstowne (Virginia) | 189.80 mi (305.45 km) |
| Hackettstown to Kingsville (Texas) | 1,599.22 mi (2,573.69 km) |
