| Weslaco to Sesena | 5,288.88 mi (8,511.62 km) |
| Weslaco to Sestao | 5,235.65 mi (8,425.97 km) |
| Weslaco to Sevilla | 5,251.22 mi (8,451.02 km) |
| Weslaco to Sevilla La Nueva | 5,266.26 mi (8,475.22 km) |
| Weslaco to Silla | 5,469.28 mi (8,801.96 km) |
| Weslaco to Silleda | 5,004.67 mi (8,054.23 km) |
| Weslaco to Sitges | 5,518.81 mi (8,881.66 km) |
| Weslaco to Socuellamos | 5,355.20 mi (8,618.35 km) |
| Weslaco to Soller | 5,606.06 mi (9,022.08 km) |
| Weslaco to Solsona | 5,482.55 mi (8,823.31 km) |
| Weslaco to Son Servera | 5,641.90 mi (9,079.76 km) |
| Weslaco to Sonseca | 5,287.48 mi (8,509.38 km) |
| Weslaco to Sopelana | 5,234.99 mi (8,424.91 km) |
| Weslaco to Soria | 5,302.67 mi (8,533.83 km) |
| Weslaco to Suances | 5,183.93 mi (8,342.73 km) |
