| Williamstown to Sestu | 4,299.38 mi (6,919.18 km) |
| Williamstown to Settimo Torinese | 4,048.16 mi (6,514.89 km) |
| Williamstown to Seveso | 4,091.66 mi (6,584.89 km) |
| Williamstown to Sezze | 4,402.41 mi (7,084.99 km) |
| Williamstown to Siano | 4,499.79 mi (7,241.72 km) |
| Williamstown to Siena | 4,262.81 mi (6,860.32 km) |
| Williamstown to Signa | 4,237.05 mi (6,818.87 km) |
| Williamstown to Silea | 4,226.23 mi (6,801.47 km) |
| Williamstown to Silvi Paese | 4,411.30 mi (7,099.30 km) |
| Williamstown to Sinalunga | 4,283.87 mi (6,894.22 km) |
| Williamstown to Siniscola | 4,283.15 mi (6,893.07 km) |
| Williamstown to Sinnai | 4,304.41 mi (6,927.28 km) |
| Williamstown to Siracusa | 4,666.37 mi (7,509.80 km) |
| Williamstown to Solaro | 4,090.25 mi (6,582.62 km) |
| Williamstown to Soliera | 4,197.78 mi (6,755.67 km) |
