| Hackettstown to Sonneberg | 3,972.46 mi (6,393.06 km) |
| Hackettstown to Sonsbeck | 3,746.87 mi (6,030.01 km) |
| Hackettstown to Sonthofen | 4,025.80 mi (6,478.90 km) |
| Hackettstown to Spaichingen | 3,944.41 mi (6,347.91 km) |
| Hackettstown to Spelle | 3,769.13 mi (6,065.83 km) |
| Hackettstown to Spenge | 3,815.00 mi (6,139.65 km) |
| Hackettstown to Speyer | 3,894.17 mi (6,267.06 km) |
| Hackettstown to Spiesen-Elversberg | 3,841.34 mi (6,182.04 km) |
| Hackettstown to Spremberg | 4,058.36 mi (6,531.30 km) |
| Hackettstown to Springe | 3,853.89 mi (6,202.23 km) |
| Hackettstown to Sprockhovel | 3,787.99 mi (6,096.18 km) |
| Hackettstown to Stade | 3,812.20 mi (6,135.15 km) |
| Hackettstown to Stadtallendorf | 3,873.02 mi (6,233.02 km) |
| Hackettstown to Stadthagen | 3,837.59 mi (6,176.01 km) |
| Hackettstown to Stadtlohn | 3,757.72 mi (6,047.47 km) |
