| Westmont to Sesena | 5,839.82 mi (9,398.28 km) |
| Westmont to Sestao | 5,722.01 mi (9,208.69 km) |
| Westmont to Sevilla | 5,872.96 mi (9,451.62 km) |
| Westmont to Sevilla La Nueva | 5,815.62 mi (9,359.33 km) |
| Westmont to Silla | 6,004.28 mi (9,662.96 km) |
| Westmont to Silleda | 5,544.38 mi (8,922.82 km) |
| Westmont to Sitges | 6,000.22 mi (9,656.41 km) |
| Westmont to Socuellamos | 5,912.82 mi (9,515.77 km) |
| Westmont to Soller | 6,104.73 mi (9,824.62 km) |
| Westmont to Solsona | 5,953.10 mi (9,580.59 km) |
| Westmont to Son Servera | 6,136.72 mi (9,876.09 km) |
| Westmont to Sonseca | 5,847.87 mi (9,411.24 km) |
| Westmont to Sopelana | 5,719.82 mi (9,205.16 km) |
| Westmont to Soria | 5,812.84 mi (9,354.87 km) |
| Westmont to Suances | 5,676.66 mi (9,135.69 km) |
