| San Marcos to Sesena | 5,833.96 mi (9,388.85 km) |
| San Marcos to Sestao | 5,720.33 mi (9,205.98 km) |
| San Marcos to Sevilla | 5,862.10 mi (9,434.15 km) |
| San Marcos to Sevilla La Nueva | 5,809.79 mi (9,349.95 km) |
| San Marcos to Silla | 6,000.07 mi (9,656.18 km) |
| San Marcos to Silleda | 5,538.37 mi (8,913.15 km) |
| San Marcos to Sitges | 5,999.77 mi (9,655.70 km) |
| San Marcos to Socuellamos | 5,906.71 mi (9,505.93 km) |
| San Marcos to Soller | 6,103.41 mi (9,822.49 km) |
| San Marcos to Solsona | 5,953.27 mi (9,580.86 km) |
| San Marcos to Son Servera | 6,135.77 mi (9,874.56 km) |
| San Marcos to Sonseca | 5,841.36 mi (9,400.76 km) |
| San Marcos to Sopelana | 5,718.24 mi (9,202.61 km) |
| San Marcos to Soria | 5,809.78 mi (9,349.94 km) |
| San Marcos to Suances | 5,674.38 mi (9,132.03 km) |
