| Hackettstown to Senftenberg | 4,046.32 mi (6,511.93 km) |
| Hackettstown to Siegburg | 3,801.91 mi (6,118.58 km) |
| Hackettstown to Siegen | 3,831.94 mi (6,166.91 km) |
| Hackettstown to Sigmaringen | 3,963.83 mi (6,379.17 km) |
| Hackettstown to Simbach am Inn | 4,113.05 mi (6,619.31 km) |
| Hackettstown to Simmerath | 3,771.25 mi (6,069.24 km) |
| Hackettstown to Sindelfingen | 3,935.76 mi (6,333.99 km) |
| Hackettstown to Sinsheim | 3,914.61 mi (6,299.96 km) |
| Hackettstown to Sinzheim | 3,900.05 mi (6,276.52 km) |
| Hackettstown to Sinzig | 3,811.01 mi (6,133.22 km) |
| Hackettstown to Soest | 3,816.14 mi (6,141.49 km) |
| Hackettstown to Solingen | 3,786.92 mi (6,094.45 km) |
| Hackettstown to Soltau | 3,842.93 mi (6,184.60 km) |
| Hackettstown to Sommerda | 3,945.67 mi (6,349.95 km) |
| Hackettstown to Sondershausen | 3,929.76 mi (6,324.33 km) |
