| Westlake to Sestu | 4,550.54 mi (7,323.39 km) |
| Westlake to Settimo Torinese | 4,272.46 mi (6,875.86 km) |
| Westlake to Seveso | 4,310.18 mi (6,936.56 km) |
| Westlake to Sezze | 4,633.40 mi (7,456.74 km) |
| Westlake to Siano | 4,730.17 mi (7,612.47 km) |
| Westlake to Siena | 4,488.76 mi (7,223.96 km) |
| Westlake to Signa | 4,461.12 mi (7,179.48 km) |
| Westlake to Silea | 4,437.62 mi (7,141.66 km) |
| Westlake to Silvi Paese | 4,634.51 mi (7,458.53 km) |
| Westlake to Sinalunga | 4,509.40 mi (7,257.18 km) |
| Westlake to Siniscola | 4,526.74 mi (7,285.08 km) |
| Westlake to Sinnai | 4,555.30 mi (7,331.05 km) |
| Westlake to Siracusa | 4,912.57 mi (7,906.01 km) |
| Westlake to Solaro | 4,309.04 mi (6,934.73 km) |
| Westlake to Soliera | 4,417.22 mi (7,108.82 km) |
