| West Springfield to Sestu | 4,434.99 mi (7,137.43 km) |
| West Springfield to Settimo Torinese | 4,182.62 mi (6,731.27 km) |
| West Springfield to Seveso | 4,225.76 mi (6,800.70 km) |
| West Springfield to Sezze | 4,537.31 mi (7,302.09 km) |
| West Springfield to Siano | 4,634.68 mi (7,458.79 km) |
| West Springfield to Siena | 4,397.41 mi (7,076.94 km) |
| West Springfield to Signa | 4,371.54 mi (7,035.31 km) |
| West Springfield to Silea | 4,359.86 mi (7,016.51 km) |
| West Springfield to Silvi Paese | 4,545.77 mi (7,315.71 km) |
| West Springfield to Sinalunga | 4,418.45 mi (7,110.81 km) |
| West Springfield to Siniscola | 4,418.56 mi (7,110.98 km) |
| West Springfield to Sinnai | 4,440.02 mi (7,145.53 km) |
| West Springfield to Siracusa | 4,801.90 mi (7,727.91 km) |
| West Springfield to Solaro | 4,224.36 mi (6,798.45 km) |
| West Springfield to Soliera | 4,331.96 mi (6,971.62 km) |
