| Guadarrama to Selargius | 707.78 mi (1,139.06 km) |
| Guadarrama to Selvazzano Dentro | 863.36 mi (1,389.45 km) |
| Guadarrama to Senago | 746.83 mi (1,201.90 km) |
| Guadarrama to Senigallia | 908.69 mi (1,462.39 km) |
| Guadarrama to Seravezza | 765.60 mi (1,232.11 km) |
| Guadarrama to Seregno | 751.56 mi (1,209.52 km) |
| Guadarrama to Seriate | 775.64 mi (1,248.27 km) |
| Guadarrama to Sermoneta | 889.34 mi (1,431.26 km) |
| Guadarrama to Serramanna | 692.90 mi (1,115.11 km) |
| Guadarrama to Serravalle Pistoiese | 793.39 mi (1,276.84 km) |
| Guadarrama to Sessa Aurunca | 939.56 mi (1,512.07 km) |
| Guadarrama to Sesto Calende | 728.73 mi (1,172.77 km) |
| Guadarrama to Sesto Fiorentino | 810.47 mi (1,304.33 km) |
| Guadarrama to Sesto San Giovanni | 750.01 mi (1,207.02 km) |
| Guadarrama to Sestri Levante | 729.68 mi (1,174.31 km) |
