| Poggibonsi to Settimo Torinese | 203.07 mi (326.81 km) |
| Poggibonsi to Seveso | 180.09 mi (289.83 km) |
| Poggibonsi to Sezze | 167.33 mi (269.29 km) |
| Poggibonsi to Siano | 258.54 mi (416.07 km) |
| Poggibonsi to Siena | 13.71 mi (22.07 km) |
| Poggibonsi to Signa | 22.02 mi (35.43 km) |
| Poggibonsi to Silea | 161.37 mi (259.70 km) |
| Poggibonsi to Silvi Paese | 162.71 mi (261.86 km) |
| Poggibonsi to Sinalunga | 34.02 mi (54.75 km) |
| Poggibonsi to Siniscola | 213.31 mi (343.29 km) |
| Poggibonsi to Sinnai | 304.88 mi (490.65 km) |
| Poggibonsi to Siracusa | 492.75 mi (793.00 km) |
| Poggibonsi to Solaro | 179.94 mi (289.59 km) |
| Poggibonsi to Soliera | 88.55 mi (142.52 km) |
| Poggibonsi to Solofra | 262.68 mi (422.74 km) |
