| Guyancourt to Somma Lombardo | 376.86 mi (606.49 km) |
| Guyancourt to Somma Vesuviana | 813.60 mi (1,309.35 km) |
| Guyancourt to Sommacampagna | 473.64 mi (762.25 km) |
| Guyancourt to Sona | 471.72 mi (759.16 km) |
| Guyancourt to Sondrio | 405.81 mi (653.08 km) |
| Guyancourt to Sora | 742.13 mi (1,194.34 km) |
| Guyancourt to Sorbolo | 479.56 mi (771.77 km) |
| Guyancourt to Soresina | 438.23 mi (705.26 km) |
| Guyancourt to Sorisole | 412.50 mi (663.85 km) |
| Guyancourt to Sorrento | 823.63 mi (1,325.51 km) |
| Guyancourt to Sorso | 635.99 mi (1,023.53 km) |
| Guyancourt to Sortino | 1,032.48 mi (1,661.62 km) |
| Guyancourt to Soverato Marina | 1,000.93 mi (1,610.84 km) |
| Guyancourt to Sovicille | 579.67 mi (932.89 km) |
| Guyancourt to Spello | 646.68 mi (1,040.73 km) |
