| Sieradz to Sestao | 1,160.21 mi (1,867.17 km) |
| Sieradz to Sevilla | 1,559.87 mi (2,510.36 km) |
| Sieradz to Sevilla La Nueva | 1,332.85 mi (2,145.01 km) |
| Sieradz to Silla | 1,248.61 mi (2,009.44 km) |
| Sieradz to Silleda | 1,398.29 mi (2,250.33 km) |
| Sieradz to Sitges | 1,074.41 mi (1,729.10 km) |
| Sieradz to Socuellamos | 1,337.87 mi (2,153.10 km) |
| Sieradz to Soller | 1,121.52 mi (1,804.91 km) |
| Sieradz to Solsona | 1,046.57 mi (1,684.30 km) |
| Sieradz to Son Servera | 1,108.30 mi (1,783.63 km) |
| Sieradz to Sonseca | 1,360.92 mi (2,190.19 km) |
| Sieradz to Sopelana | 1,156.21 mi (1,860.74 km) |
| Sieradz to Soria | 1,206.64 mi (1,941.90 km) |
| Sieradz to Suances | 1,197.26 mi (1,926.81 km) |
| Sieradz to Sueca | 1,253.46 mi (2,017.24 km) |
