| Hackettstown to Dallas (Oregon) | 2,433.91 mi (3,916.99 km) |
| Hackettstown to Dallas (Texas) | 1,330.32 mi (2,140.94 km) |
| Hackettstown to Dalton (Georgia) | 694.55 mi (1,117.77 km) |
| Hackettstown to Daly City (California) | 2,526.36 mi (4,065.79 km) |
| Hackettstown to Damascus (Maryland) | 166.37 mi (267.75 km) |
| Hackettstown to Damascus (Oregon) | 2,386.04 mi (3,839.95 km) |
| Hackettstown to Dana Point (California) | 2,390.28 mi (3,846.79 km) |
| Hackettstown to Danbury (Connecticut) | 80.01 mi (128.77 km) |
| Hackettstown to Dania Beach (Florida) | 1,066.94 mi (1,717.08 km) |
| Hackettstown to Danville (California) | 2,497.79 mi (4,019.80 km) |
| Hackettstown to Danville (Illinois) | 672.94 mi (1,083.00 km) |
| Hackettstown to Danville (Indiana) | 619.39 mi (996.81 km) |
| Hackettstown to Danville (Kentucky) | 576.46 mi (927.72 km) |
| Hackettstown to Danville (Virginia) | 384.74 mi (619.18 km) |
| Hackettstown to Daphne (Alabama) | 1,015.40 mi (1,634.13 km) |
