| Hackettstown to Sinop | 5,234.56 mi (8,424.20 km) |
| Hackettstown to Siran | 5,471.53 mi (8,805.57 km) |
| Hackettstown to Sirnak | 5,728.70 mi (9,219.45 km) |
| Hackettstown to Sirvan | 5,685.15 mi (9,149.36 km) |
| Hackettstown to Sivas | 5,413.53 mi (8,712.23 km) |
| Hackettstown to Sivasli | 5,182.39 mi (8,340.26 km) |
| Hackettstown to Siverek | 5,598.85 mi (9,010.48 km) |
| Hackettstown to Sivrice | 5,564.25 mi (8,954.80 km) |
| Hackettstown to Sivrihisar | 5,213.63 mi (8,390.53 km) |
| Hackettstown to Sogut | 5,133.48 mi (8,261.53 km) |
| Hackettstown to Sogutlu | 5,105.88 mi (8,217.12 km) |
| Hackettstown to Soke | 5,120.76 mi (8,241.07 km) |
| Hackettstown to Solhan | 5,603.54 mi (9,018.02 km) |
| Hackettstown to Soma | 5,065.64 mi (8,152.36 km) |
| Hackettstown to Sorgun | 5,340.37 mi (8,594.49 km) |
