| Saint-Nazaire to Settimo Torinese | 499.24 mi (803.45 km) |
| Saint-Nazaire to Seveso | 551.37 mi (887.35 km) |
| Saint-Nazaire to Sezze | 851.40 mi (1,370.20 km) |
| Saint-Nazaire to Siano | 948.62 mi (1,526.66 km) |
| Saint-Nazaire to Siena | 711.61 mi (1,145.22 km) |
| Saint-Nazaire to Signa | 687.01 mi (1,105.63 km) |
| Saint-Nazaire to Silea | 698.53 mi (1,124.18 km) |
| Saint-Nazaire to Silvi Paese | 861.07 mi (1,385.76 km) |
| Saint-Nazaire to Sinalunga | 732.79 mi (1,179.32 km) |
| Saint-Nazaire to Siniscola | 750.63 mi (1,208.02 km) |
| Saint-Nazaire to Sinnai | 794.08 mi (1,277.95 km) |
| Saint-Nazaire to Siracusa | 1,135.83 mi (1,827.94 km) |
| Saint-Nazaire to Solaro | 549.43 mi (884.22 km) |
| Saint-Nazaire to Soliera | 653.51 mi (1,051.73 km) |
| Saint-Nazaire to Solofra | 954.22 mi (1,535.67 km) |
