| Guyancourt to Settimo Torinese | 367.61 mi (591.61 km) |
| Guyancourt to Seveso | 395.52 mi (636.53 km) |
| Guyancourt to Sezze | 733.14 mi (1,179.87 km) |
| Guyancourt to Siano | 826.41 mi (1,329.98 km) |
| Guyancourt to Siena | 581.56 mi (935.93 km) |
| Guyancourt to Signa | 551.25 mi (887.15 km) |
| Guyancourt to Silea | 525.34 mi (845.46 km) |
| Guyancourt to Silvi Paese | 721.77 mi (1,161.58 km) |
| Guyancourt to Sinalunga | 601.09 mi (967.36 km) |
| Guyancourt to Siniscola | 678.23 mi (1,091.50 km) |
| Guyancourt to Sinnai | 743.13 mi (1,195.96 km) |
| Guyancourt to Siracusa | 1,046.04 mi (1,683.45 km) |
| Guyancourt to Solaro | 394.57 mi (635.01 km) |
| Guyancourt to Soliera | 502.68 mi (808.98 km) |
| Guyancourt to Solofra | 830.56 mi (1,336.66 km) |
