| Cities | Distance |
|---|---|
| Siena to Somma Lombardo | 208.58 mi (335.68 km) |
| Siena to Somma Vesuviana | 232.14 mi (373.60 km) |
| Siena to Sommacampagna | 145.78 mi (234.62 km) |
| Siena to Sona | 148.19 mi (238.48 km) |
| Siena to Sondrio | 209.65 mi (337.40 km) |
| Siena to Sora | 160.58 mi (258.43 km) |
| Siena to Sorbolo | 114.30 mi (183.95 km) |
| Siena to Soresina | 154.29 mi (248.31 km) |
| Siena to Sorisole | 186.39 mi (299.97 km) |
| Siena to Sorrento | 242.82 mi (390.78 km) |
| Siena to Sorso | 224.20 mi (360.82 km) |
| Siena to Sortino | 467.60 mi (752.53 km) |
| Siena to Soverato Marina | 420.07 mi (676.03 km) |
| Siena to Sovicille | 5.49 mi (8.84 km) |
| Siena to Spello | 71.31 mi (114.76 km) |