| Castro Daire to Sestu | 905.11 mi (1,456.63 km) |
| Castro Daire to Settimo Torinese | 843.65 mi (1,357.72 km) |
| Castro Daire to Seveso | 916.96 mi (1,475.70 km) |
| Castro Daire to Sezze | 1,089.83 mi (1,753.91 km) |
| Castro Daire to Siano | 1,179.29 mi (1,897.89 km) |
| Castro Daire to Siena | 999.19 mi (1,608.03 km) |
| Castro Daire to Signa | 989.88 mi (1,593.06 km) |
| Castro Daire to Silea | 1,065.94 mi (1,715.47 km) |
| Castro Daire to Silvi Paese | 1,139.52 mi (1,833.88 km) |
| Castro Daire to Sinalunga | 1,019.06 mi (1,640.02 km) |
| Castro Daire to Siniscola | 921.67 mi (1,483.29 km) |
| Castro Daire to Sinnai | 910.87 mi (1,465.90 km) |
| Castro Daire to Siracusa | 1,270.89 mi (2,045.30 km) |
| Castro Daire to Solaro | 913.96 mi (1,470.87 km) |
| Castro Daire to Soliera | 989.28 mi (1,592.09 km) |
