| Quattro Castella to Sestao | 675.32 mi (1,086.82 km) |
| Quattro Castella to Sevilla | 996.62 mi (1,603.90 km) |
| Quattro Castella to Sevilla La Nueva | 794.27 mi (1,278.26 km) |
| Quattro Castella to Silla | 665.90 mi (1,071.66 km) |
| Quattro Castella to Silleda | 941.99 mi (1,515.99 km) |
| Quattro Castella to Sitges | 496.81 mi (799.53 km) |
| Quattro Castella to Socuellamos | 773.44 mi (1,244.73 km) |
| Quattro Castella to Soller | 520.25 mi (837.26 km) |
| Quattro Castella to Solsona | 485.09 mi (780.68 km) |
| Quattro Castella to Son Servera | 502.19 mi (808.20 km) |
| Quattro Castella to Sonseca | 811.67 mi (1,306.26 km) |
| Quattro Castella to Sopelana | 672.99 mi (1,083.07 km) |
| Quattro Castella to Soria | 680.00 mi (1,094.36 km) |
| Quattro Castella to Suances | 724.87 mi (1,166.57 km) |
| Quattro Castella to Sueca | 668.32 mi (1,075.56 km) |
