| Hackettstown to San Diego (California) | 2,379.30 mi (3,829.11 km) |
| Hackettstown to San Diego Country Estates (California) | 2,356.46 mi (3,792.36 km) |
| Hackettstown to San Dimas (California) | 2,377.90 mi (3,826.87 km) |
| Hackettstown to San Fernando (California) | 2,405.55 mi (3,871.36 km) |
| Hackettstown to San Francisco (California) | 2,523.49 mi (4,061.17 km) |
| Hackettstown to San Gabriel (California) | 2,393.42 mi (3,851.83 km) |
| Hackettstown to San Germán (Puerto Rico) | 1,639.71 mi (2,638.86 km) |
| Hackettstown to San Jacinto (California) | 2,344.09 mi (3,772.44 km) |
| Hackettstown to San Jose (California) | 2,503.76 mi (4,029.41 km) |
| Hackettstown to San Juan (Puerto Rico) | 1,636.20 mi (2,633.22 km) |
| Hackettstown to San Juan (Texas) | 1,673.67 mi (2,693.52 km) |
| Hackettstown to San Juan Capistrano (California) | 2,387.27 mi (3,841.94 km) |
| Hackettstown to San Leandro (California) | 2,510.02 mi (4,039.49 km) |
| Hackettstown to San Lorenzo (California) | 2,509.46 mi (4,038.59 km) |
| Hackettstown to San Luis (Arizona) | 2,263.52 mi (3,642.79 km) |
