| Loudoun Valley Estates to Sesena | 3,812.52 mi (6,135.66 km) |
| Loudoun Valley Estates to Sestao | 3,756.14 mi (6,044.93 km) |
| Loudoun Valley Estates to Sevilla | 3,784.20 mi (6,090.08 km) |
| Loudoun Valley Estates to Sevilla La Nueva | 3,789.67 mi (6,098.89 km) |
| Loudoun Valley Estates to Silla | 3,992.25 mi (6,424.91 km) |
| Loudoun Valley Estates to Silleda | 3,526.53 mi (5,675.39 km) |
| Loudoun Valley Estates to Sitges | 4,039.39 mi (6,500.78 km) |
| Loudoun Valley Estates to Socuellamos | 3,879.74 mi (6,243.84 km) |
| Loudoun Valley Estates to Soller | 4,127.25 mi (6,642.17 km) |
| Loudoun Valley Estates to Solsona | 4,003.03 mi (6,442.25 km) |
| Loudoun Valley Estates to Son Servera | 4,163.01 mi (6,699.71 km) |
| Loudoun Valley Estates to Sonseca | 3,812.02 mi (6,134.85 km) |
| Loudoun Valley Estates to Sopelana | 3,755.48 mi (6,043.85 km) |
| Loudoun Valley Estates to Soria | 3,823.76 mi (6,153.75 km) |
| Loudoun Valley Estates to Suances | 3,704.45 mi (5,961.73 km) |
