| Williamsport to Sesena | 3,722.40 mi (5,990.62 km) |
| Williamsport to Sestao | 3,657.46 mi (5,886.11 km) |
| Williamsport to Sevilla | 3,703.69 mi (5,960.52 km) |
| Williamsport to Sevilla La Nueva | 3,699.24 mi (5,953.36 km) |
| Williamsport to Silla | 3,900.85 mi (6,277.81 km) |
| Williamsport to Silleda | 3,433.57 mi (5,525.79 km) |
| Williamsport to Sitges | 3,941.58 mi (6,343.35 km) |
| Williamsport to Socuellamos | 3,790.79 mi (6,100.68 km) |
| Williamsport to Soller | 4,031.94 mi (6,488.79 km) |
| Williamsport to Solsona | 3,903.72 mi (6,282.44 km) |
| Williamsport to Son Servera | 4,067.40 mi (6,545.85 km) |
| Williamsport to Sonseca | 3,723.15 mi (5,991.82 km) |
| Williamsport to Sopelana | 3,656.60 mi (5,884.73 km) |
| Williamsport to Soria | 3,728.42 mi (6,000.31 km) |
| Williamsport to Suances | 3,606.28 mi (5,803.75 km) |
