| Senec to Sestao | 1,036.63 mi (1,668.30 km) |
| Senec to Sevilla | 1,400.08 mi (2,253.21 km) |
| Senec to Sevilla La Nueva | 1,185.75 mi (1,908.28 km) |
| Senec to Silla | 1,074.54 mi (1,729.30 km) |
| Senec to Silleda | 1,292.50 mi (2,080.07 km) |
| Senec to Sitges | 902.42 mi (1,452.30 km) |
| Senec to Socuellamos | 1,176.09 mi (1,892.73 km) |
| Senec to Soller | 932.66 mi (1,500.97 km) |
| Senec to Solsona | 883.45 mi (1,421.78 km) |
| Senec to Son Servera | 914.61 mi (1,471.92 km) |
| Senec to Sonseca | 1,208.20 mi (1,944.42 km) |
| Senec to Sopelana | 1,033.30 mi (1,662.93 km) |
| Senec to Soria | 1,064.11 mi (1,712.51 km) |
| Senec to Suances | 1,080.21 mi (1,738.43 km) |
| Senec to Sueca | 1,077.71 mi (1,734.41 km) |
