| Sasso Marconi to Sestao | 713.31 mi (1,147.96 km) |
| Sasso Marconi to Sevilla | 1,025.31 mi (1,650.08 km) |
| Sasso Marconi to Sevilla La Nueva | 827.09 mi (1,331.07 km) |
| Sasso Marconi to Silla | 692.55 mi (1,114.56 km) |
| Sasso Marconi to Silleda | 980.35 mi (1,577.72 km) |
| Sasso Marconi to Sitges | 525.92 mi (846.38 km) |
| Sasso Marconi to Socuellamos | 802.91 mi (1,292.16 km) |
| Sasso Marconi to Soller | 542.39 mi (872.89 km) |
| Sasso Marconi to Solsona | 517.23 mi (832.40 km) |
| Sasso Marconi to Son Servera | 522.17 mi (840.36 km) |
| Sasso Marconi to Sonseca | 843.12 mi (1,356.86 km) |
| Sasso Marconi to Sopelana | 711.09 mi (1,144.39 km) |
| Sasso Marconi to Soria | 714.74 mi (1,150.26 km) |
| Sasso Marconi to Suances | 763.30 mi (1,228.42 km) |
| Sasso Marconi to Sueca | 694.40 mi (1,117.52 km) |
