| Castelletto sopra Ticino to Settimo Torinese | 58.23 mi (93.71 km) |
| Castelletto sopra Ticino to Seveso | 24.86 mi (40.00 km) |
| Castelletto sopra Ticino to Sezze | 366.03 mi (589.08 km) |
| Castelletto sopra Ticino to Siano | 456.12 mi (734.06 km) |
| Castelletto sopra Ticino to Siena | 212.41 mi (341.84 km) |
| Castelletto sopra Ticino to Signa | 180.25 mi (290.08 km) |
| Castelletto sopra Ticino to Silea | 176.86 mi (284.63 km) |
| Castelletto sopra Ticino to Silvi Paese | 348.87 mi (561.46 km) |
| Castelletto sopra Ticino to Sinalunga | 230.62 mi (371.15 km) |
| Castelletto sopra Ticino to Siniscola | 359.31 mi (578.26 km) |
| Castelletto sopra Ticino to Sinnai | 444.12 mi (714.74 km) |
| Castelletto sopra Ticino to Siracusa | 689.30 mi (1,109.33 km) |
| Castelletto sopra Ticino to Solaro | 22.86 mi (36.80 km) |
| Castelletto sopra Ticino to Soliera | 130.39 mi (209.84 km) |
| Castelletto sopra Ticino to Solofra | 459.77 mi (739.92 km) |
