| West Chicago to Sestu | 4,804.59 mi (7,732.23 km) |
| West Chicago to Settimo Torinese | 4,509.15 mi (7,256.78 km) |
| West Chicago to Seveso | 4,542.64 mi (7,310.67 km) |
| West Chicago to Sezze | 4,873.11 mi (7,842.51 km) |
| West Chicago to Siano | 4,969.03 mi (7,996.88 km) |
| West Chicago to Siena | 4,725.58 mi (7,605.08 km) |
| West Chicago to Signa | 4,696.75 mi (7,558.69 km) |
| West Chicago to Silea | 4,664.39 mi (7,506.61 km) |
| West Chicago to Silvi Paese | 4,868.73 mi (7,835.47 km) |
| West Chicago to Sinalunga | 4,745.84 mi (7,637.68 km) |
| West Chicago to Siniscola | 4,775.67 mi (7,685.69 km) |
| West Chicago to Sinnai | 4,809.14 mi (7,739.56 km) |
| West Chicago to Siracusa | 5,161.79 mi (8,307.11 km) |
| West Chicago to Solaro | 4,541.70 mi (7,309.15 km) |
| West Chicago to Soliera | 4,649.79 mi (7,483.11 km) |
