| Santander to Serik | 1,882.20 mi (3,029.11 km) |
| Santander to Serinhisar | 1,771.58 mi (2,851.09 km) |
| Santander to Serinyol | 2,154.14 mi (3,466.75 km) |
| Santander to Seydisehir | 1,905.52 mi (3,066.63 km) |
| Santander to Seyhan | 2,092.52 mi (3,367.59 km) |
| Santander to Seyitgazi | 1,794.82 mi (2,888.48 km) |
| Santander to Siirt | 2,396.45 mi (3,856.72 km) |
| Santander to Sile | 1,703.03 mi (2,740.76 km) |
| Santander to Silifke | 2,040.13 mi (3,283.27 km) |
| Santander to Silivri | 1,636.95 mi (2,634.42 km) |
| Santander to Silopi | 2,441.94 mi (3,929.93 km) |
| Santander to Simav | 1,717.85 mi (2,764.62 km) |
| Santander to Sinanpasa | 1,789.67 mi (2,880.20 km) |
| Santander to Sindirgi | 1,673.51 mi (2,693.26 km) |
| Santander to Sinop | 1,961.06 mi (3,156.03 km) |
