| Republic to Sesena | 4,625.20 mi (7,443.55 km) |
| Republic to Sestao | 4,547.04 mi (7,317.76 km) |
| Republic to Sevilla | 4,616.92 mi (7,430.21 km) |
| Republic to Sevilla La Nueva | 4,601.69 mi (7,405.71 km) |
| Republic to Silla | 4,801.42 mi (7,727.14 km) |
| Republic to Silleda | 4,333.25 mi (6,973.70 km) |
| Republic to Sitges | 4,831.68 mi (7,775.83 km) |
| Republic to Socuellamos | 4,694.95 mi (7,555.79 km) |
| Republic to Soller | 4,926.11 mi (7,927.82 km) |
| Republic to Solsona | 4,791.21 mi (7,710.70 km) |
| Republic to Son Servera | 4,960.96 mi (7,983.89 km) |
| Republic to Sonseca | 4,627.57 mi (7,447.36 km) |
| Republic to Sopelana | 4,545.83 mi (7,315.80 km) |
| Republic to Soria | 4,623.50 mi (7,440.80 km) |
| Republic to Suances | 4,497.00 mi (7,237.22 km) |
