| Hackettstown to Sesena | 3,628.65 mi (5,839.75 km) |
| Hackettstown to Sestao | 3,568.87 mi (5,743.54 km) |
| Hackettstown to Sevilla | 3,604.91 mi (5,801.55 km) |
| Hackettstown to Sevilla La Nueva | 3,605.67 mi (5,802.77 km) |
| Hackettstown to Silla | 3,807.87 mi (6,128.17 km) |
| Hackettstown to Silleda | 3,341.40 mi (5,377.46 km) |
| Hackettstown to Sitges | 3,852.48 mi (6,199.96 km) |
| Hackettstown to Socuellamos | 3,696.40 mi (5,948.79 km) |
| Hackettstown to Soller | 3,941.30 mi (6,342.91 km) |
| Hackettstown to Solsona | 3,815.57 mi (6,140.57 km) |
| Hackettstown to Son Servera | 3,976.94 mi (6,400.27 km) |
| Hackettstown to Sonseca | 3,628.70 mi (5,839.83 km) |
| Hackettstown to Sopelana | 3,568.13 mi (5,742.35 km) |
| Hackettstown to Soria | 3,637.74 mi (5,854.38 km) |
| Hackettstown to Suances | 3,517.35 mi (5,660.63 km) |
