| Santander to Sesimbra | 443.18 mi (713.23 km) |
| Santander to Setubal | 432.04 mi (695.31 km) |
| Santander to Sever do Vouga | 300.35 mi (483.37 km) |
| Santander to Silves | 497.40 mi (800.49 km) |
| Santander to Sines | 463.53 mi (745.98 km) |
| Santander to Sintra | 433.67 mi (697.93 km) |
| Santander to Sobrado de Paiva | 283.22 mi (455.80 km) |
| Santander to Sobral de Monte Agraco | 413.93 mi (666.15 km) |
| Santander to Soure | 342.72 mi (551.55 km) |
| Santander to Tabua | 305.09 mi (490.99 km) |
| Santander to Tavira | 482.89 mi (777.14 km) |
| Santander to Tomar | 357.83 mi (575.87 km) |
| Santander to Tondela | 299.43 mi (481.89 km) |
| Santander to Torre de Moncorvo | 230.93 mi (371.64 km) |
| Santander to Torres Novas | 368.88 mi (593.65 km) |
