| Sermoneta to Sestao | 823.11 mi (1,324.67 km) |
| Sermoneta to Sevilla | 1,053.44 mi (1,695.34 km) |
| Sermoneta to Sevilla La Nueva | 890.21 mi (1,432.65 km) |
| Sermoneta to Silla | 719.40 mi (1,157.76 km) |
| Sermoneta to Silleda | 1,087.28 mi (1,749.81 km) |
| Sermoneta to Sitges | 579.46 mi (932.56 km) |
| Sermoneta to Socuellamos | 843.17 mi (1,356.94 km) |
| Sermoneta to Soller | 552.53 mi (889.22 km) |
| Sermoneta to Solsona | 591.17 mi (951.39 km) |
| Sermoneta to Son Servera | 521.93 mi (839.97 km) |
| Sermoneta to Sonseca | 895.67 mi (1,441.43 km) |
| Sermoneta to Sopelana | 822.06 mi (1,322.98 km) |
| Sermoneta to Soria | 796.61 mi (1,282.03 km) |
| Sermoneta to Suances | 875.93 mi (1,409.67 km) |
| Sermoneta to Sueca | 717.52 mi (1,154.74 km) |
