| Castel San Giorgio to Settimo Torinese | 461.48 mi (742.68 km) |
| Castel San Giorgio to Seveso | 437.06 mi (703.38 km) |
| Castel San Giorgio to Sezze | 98.36 mi (158.29 km) |
| Castel San Giorgio to Siano | 1.36 mi (2.19 km) |
| Castel San Giorgio to Siena | 246.02 mi (395.93 km) |
| Castel San Giorgio to Signa | 277.12 mi (445.99 km) |
| Castel San Giorgio to Silea | 357.63 mi (575.54 km) |
| Castel San Giorgio to Silvi Paese | 125.72 mi (202.33 km) |
| Castel San Giorgio to Sinalunga | 226.84 mi (365.07 km) |
| Castel San Giorgio to Siniscola | 262.55 mi (422.53 km) |
| Castel San Giorgio to Sinnai | 308.17 mi (495.95 km) |
| Castel San Giorgio to Siracusa | 258.55 mi (416.10 km) |
| Castel San Giorgio to Solaro | 437.33 mi (703.82 km) |
| Castel San Giorgio to Soliera | 333.60 mi (536.88 km) |
| Castel San Giorgio to Solofra | 8.57 mi (13.79 km) |
