| Hackettstown to Security-Widefield (Colorado) | 1,585.47 mi (2,551.57 km) |
| Hackettstown to Sedalia (Missouri) | 986.78 mi (1,588.06 km) |
| Hackettstown to Sedro-Woolley (Washington) | 2,348.51 mi (3,779.57 km) |
| Hackettstown to Seguin (Texas) | 1,513.43 mi (2,435.63 km) |
| Hackettstown to Selden (New York) | 92.97 mi (149.62 km) |
| Hackettstown to Selma (Alabama) | 891.72 mi (1,435.08 km) |
| Hackettstown to Selma (California) | 2,406.39 mi (3,872.71 km) |
| Hackettstown to Selma (Texas) | 1,530.11 mi (2,462.48 km) |
| Hackettstown to Seminole (Florida) | 1,005.96 mi (1,618.93 km) |
| Hackettstown to Seven Hills (Ohio) | 358.21 mi (576.48 km) |
| Hackettstown to Seven Oaks (South Carolina) | 583.80 mi (939.53 km) |
| Hackettstown to Severn (Maryland) | 154.57 mi (248.76 km) |
| Hackettstown to Severna Park (Maryland) | 153.04 mi (246.29 km) |
| Hackettstown to Sevierville (Tennessee) | 584.34 mi (940.40 km) |
| Hackettstown to Seymour (Indiana) | 600.69 mi (966.71 km) |
