| Hackettstown to Iselin (New Jersey) | 33.09 mi (53.26 km) |
| Hackettstown to Isla Vista (California) | 2,476.36 mi (3,985.32 km) |
| Hackettstown to Issaquah (Washington) | 2,346.73 mi (3,776.70 km) |
| Hackettstown to Ithaca (New York) | 139.90 mi (225.14 km) |
| Hackettstown to Ives Estates (Florida) | 1,073.66 mi (1,727.89 km) |
| Hackettstown to Jackson (Michigan) | 504.20 mi (811.43 km) |
| Hackettstown to Jackson (Mississippi) | 1,035.19 mi (1,665.98 km) |
| Hackettstown to Jackson (Missouri) | 829.08 mi (1,334.27 km) |
| Hackettstown to Jackson (Tennessee) | 839.43 mi (1,350.93 km) |
| Hackettstown to Jackson (Wyoming) | 1,835.61 mi (2,954.13 km) |
| Hackettstown to Jacksonville (Alabama) | 771.88 mi (1,242.22 km) |
| Hackettstown to Jacksonville (Arkansas) | 1,027.81 mi (1,654.11 km) |
| Hackettstown to Jacksonville (Florida) | 821.87 mi (1,322.68 km) |
| Hackettstown to Jacksonville (Illinois) | 814.57 mi (1,310.93 km) |
| Hackettstown to Jacksonville (North Carolina) | 445.77 mi (717.40 km) |
