| Trecastagni to Sestu | 344.30 mi (554.10 km) |
| Trecastagni to Settimo Torinese | 642.54 mi (1,034.06 km) |
| Trecastagni to Seveso | 633.49 mi (1,019.50 km) |
| Trecastagni to Sezze | 288.99 mi (465.09 km) |
| Trecastagni to Siano | 221.10 mi (355.82 km) |
| Trecastagni to Siena | 440.43 mi (708.80 km) |
| Trecastagni to Signa | 474.27 mi (763.26 km) |
| Trecastagni to Silea | 573.61 mi (923.14 km) |
| Trecastagni to Silvi Paese | 344.66 mi (554.68 km) |
| Trecastagni to Sinalunga | 425.07 mi (684.08 km) |
| Trecastagni to Siniscola | 353.73 mi (569.27 km) |
| Trecastagni to Sinnai | 338.71 mi (545.10 km) |
| Trecastagni to Siracusa | 39.46 mi (63.50 km) |
| Trecastagni to Solaro | 633.14 mi (1,018.95 km) |
| Trecastagni to Soliera | 537.28 mi (864.67 km) |
