| Mastic to Sesena | 3,535.30 mi (5,689.52 km) |
| Mastic to Sestao | 3,478.86 mi (5,598.69 km) |
| Mastic to Sevilla | 3,508.49 mi (5,646.38 km) |
| Mastic to Sevilla La Nueva | 3,512.43 mi (5,652.71 km) |
| Mastic to Silla | 3,714.95 mi (5,978.64 km) |
| Mastic to Silleda | 3,249.14 mi (5,228.98 km) |
| Mastic to Sitges | 3,762.05 mi (6,054.43 km) |
| Mastic to Socuellamos | 3,602.63 mi (5,797.88 km) |
| Mastic to Soller | 3,849.84 mi (6,195.71 km) |
| Mastic to Solsona | 3,725.78 mi (5,996.06 km) |
| Mastic to Son Servera | 3,885.59 mi (6,253.26 km) |
| Mastic to Sonseca | 3,534.91 mi (5,688.89 km) |
| Mastic to Sopelana | 3,478.21 mi (5,597.64 km) |
| Mastic to Soria | 3,546.35 mi (5,707.30 km) |
| Mastic to Suances | 3,427.14 mi (5,515.44 km) |
