| Wilmette to Sesena | 4,187.86 mi (6,739.71 km) |
| Wilmette to Sestao | 4,102.70 mi (6,602.65 km) |
| Wilmette to Sevilla | 4,189.14 mi (6,741.78 km) |
| Wilmette to Sevilla La Nueva | 4,164.15 mi (6,701.55 km) |
| Wilmette to Silla | 4,362.34 mi (7,020.50 km) |
| Wilmette to Silleda | 3,894.40 mi (6,267.43 km) |
| Wilmette to Sitges | 4,387.14 mi (7,060.43 km) |
| Wilmette to Socuellamos | 4,258.46 mi (6,853.32 km) |
| Wilmette to Soller | 4,483.31 mi (7,215.18 km) |
| Wilmette to Solsona | 4,345.66 mi (6,993.66 km) |
| Wilmette to Son Servera | 4,517.81 mi (7,270.71 km) |
| Wilmette to Sonseca | 4,191.39 mi (6,745.39 km) |
| Wilmette to Sopelana | 4,101.34 mi (6,600.47 km) |
| Wilmette to Soria | 4,181.59 mi (6,729.62 km) |
| Wilmette to Suances | 4,053.22 mi (6,523.02 km) |
