| Civitavecchia to Sestao | 755.36 mi (1,215.64 km) |
| Civitavecchia to Sevilla | 1,001.67 mi (1,612.03 km) |
| Civitavecchia to Sevilla La Nueva | 830.21 mi (1,336.10 km) |
| Civitavecchia to Silla | 666.03 mi (1,071.87 km) |
| Civitavecchia to Silleda | 1,020.59 mi (1,642.48 km) |
| Civitavecchia to Sitges | 519.08 mi (835.38 km) |
| Civitavecchia to Socuellamos | 787.63 mi (1,267.57 km) |
| Civitavecchia to Soller | 501.31 mi (806.78 km) |
| Civitavecchia to Solsona | 527.29 mi (848.60 km) |
| Civitavecchia to Son Servera | 472.87 mi (761.01 km) |
| Civitavecchia to Sonseca | 837.80 mi (1,348.31 km) |
| Civitavecchia to Sopelana | 754.16 mi (1,213.70 km) |
| Civitavecchia to Soria | 732.82 mi (1,179.36 km) |
| Civitavecchia to Suances | 807.98 mi (1,300.32 km) |
| Civitavecchia to Sueca | 665.00 mi (1,070.21 km) |
