| Western Springs to Sesena | 4,204.88 mi (6,767.10 km) |
| Western Springs to Sestao | 4,120.42 mi (6,631.18 km) |
| Western Springs to Sevilla | 4,205.30 mi (6,767.77 km) |
| Western Springs to Sevilla La Nueva | 4,181.18 mi (6,728.97 km) |
| Western Springs to Silla | 4,379.53 mi (7,048.17 km) |
| Western Springs to Silleda | 3,911.54 mi (6,295.02 km) |
| Western Springs to Sitges | 4,404.90 mi (7,089.00 km) |
| Western Springs to Socuellamos | 4,275.40 mi (6,880.58 km) |
| Western Springs to Soller | 4,500.88 mi (7,243.47 km) |
| Western Springs to Solsona | 4,363.52 mi (7,022.41 km) |
| Western Springs to Son Servera | 4,535.42 mi (7,299.06 km) |
| Western Springs to Sonseca | 4,208.29 mi (6,772.59 km) |
| Western Springs to Sopelana | 4,119.08 mi (6,629.02 km) |
| Western Springs to Soria | 4,199.06 mi (6,757.73 km) |
| Western Springs to Suances | 4,070.88 mi (6,551.45 km) |
