| Saint-Louis to Settimo Torinese | 170.00 mi (273.59 km) |
| Saint-Louis to Seveso | 153.69 mi (247.34 km) |
| Saint-Louis to Sezze | 500.02 mi (804.71 km) |
| Saint-Louis to Siano | 586.39 mi (943.70 km) |
| Saint-Louis to Siena | 346.81 mi (558.14 km) |
| Saint-Louis to Signa | 313.30 mi (504.22 km) |
| Saint-Louis to Silea | 261.06 mi (420.14 km) |
| Saint-Louis to Silvi Paese | 472.23 mi (759.97 km) |
| Saint-Louis to Sinalunga | 363.32 mi (584.71 km) |
| Saint-Louis to Siniscola | 496.04 mi (798.30 km) |
| Saint-Louis to Sinnai | 578.40 mi (930.84 km) |
| Saint-Louis to Siracusa | 825.94 mi (1,329.22 km) |
| Saint-Louis to Solaro | 154.22 mi (248.19 km) |
| Saint-Louis to Soliera | 254.11 mi (408.94 km) |
| Saint-Louis to Solofra | 589.29 mi (948.37 km) |
