| Santander to Selargius | 731.57 mi (1,177.34 km) |
| Santander to Selvazzano Dentro | 779.29 mi (1,254.15 km) |
| Santander to Senago | 653.19 mi (1,051.21 km) |
| Santander to Senigallia | 850.62 mi (1,368.93 km) |
| Santander to Seravezza | 701.01 mi (1,128.17 km) |
| Santander to Seregno | 657.06 mi (1,057.44 km) |
| Santander to Seriate | 682.14 mi (1,097.81 km) |
| Santander to Sermoneta | 863.75 mi (1,390.08 km) |
| Santander to Serramanna | 714.86 mi (1,150.46 km) |
| Santander to Serravalle Pistoiese | 731.11 mi (1,176.60 km) |
| Santander to Sessa Aurunca | 916.98 mi (1,475.74 km) |
| Santander to Sesto Calende | 631.00 mi (1,015.50 km) |
| Santander to Sesto Fiorentino | 749.59 mi (1,206.35 km) |
| Santander to Sesto San Giovanni | 657.49 mi (1,058.13 km) |
| Santander to Sestri Levante | 659.09 mi (1,060.70 km) |
