| Hackettstown to Des Plaines (Illinois) | 681.40 mi (1,096.61 km) |
| Hackettstown to Desert Hot Springs (California) | 2,316.14 mi (3,727.46 km) |
| Hackettstown to DeSoto (Texas) | 1,342.08 mi (2,159.86 km) |
| Hackettstown to Destin (Florida) | 972.82 mi (1,565.61 km) |
| Hackettstown to Destrehan (Louisiana) | 1,151.05 mi (1,852.43 km) |
| Hackettstown to Detroit (Michigan) | 440.18 mi (708.40 km) |
| Hackettstown to Diamond Bar (California) | 2,381.37 mi (3,832.44 km) |
| Hackettstown to Diamond Springs (California) | 2,419.83 mi (3,894.34 km) |
| Hackettstown to Dickinson (North Dakota) | 1,445.32 mi (2,326.02 km) |
| Hackettstown to Dickinson (Texas) | 1,382.56 mi (2,225.01 km) |
| Hackettstown to Dickson (Tennessee) | 753.94 mi (1,213.35 km) |
| Hackettstown to Difficult Run (Virginia) | 189.91 mi (305.63 km) |
| Hackettstown to Dinuba (California) | 2,395.87 mi (3,855.79 km) |
| Hackettstown to Discovery Bay (California) | 2,476.55 mi (3,985.62 km) |
| Hackettstown to Dix Hills (New York) | 77.88 mi (125.34 km) |
