| Herndon to Sesena | 3,807.04 mi (6,126.83 km) |
| Herndon to Sestao | 3,750.89 mi (6,036.48 km) |
| Herndon to Sevilla | 3,778.50 mi (6,080.90 km) |
| Herndon to Sevilla La Nueva | 3,784.20 mi (6,090.08 km) |
| Herndon to Silla | 3,986.80 mi (6,416.14 km) |
| Herndon to Silleda | 3,521.12 mi (5,666.70 km) |
| Herndon to Sitges | 4,034.11 mi (6,492.28 km) |
| Herndon to Socuellamos | 3,874.23 mi (6,234.97 km) |
| Herndon to Soller | 4,121.90 mi (6,633.56 km) |
| Herndon to Solsona | 3,997.79 mi (6,433.82 km) |
| Herndon to Son Servera | 4,157.66 mi (6,691.11 km) |
| Herndon to Sonseca | 3,806.50 mi (6,125.97 km) |
| Herndon to Sopelana | 3,750.23 mi (6,035.41 km) |
| Herndon to Soria | 3,818.42 mi (6,145.15 km) |
| Herndon to Suances | 3,699.18 mi (5,953.26 km) |
