| Santa Monica to Sestu | 6,363.70 mi (10,241.38 km) |
| Santa Monica to Settimo Torinese | 6,016.99 mi (9,683.41 km) |
| Santa Monica to Seveso | 6,034.73 mi (9,711.96 km) |
| Santa Monica to Sezze | 6,380.53 mi (10,268.47 km) |
| Santa Monica to Siano | 6,470.53 mi (10,413.31 km) |
| Santa Monica to Siena | 6,227.19 mi (10,021.69 km) |
| Santa Monica to Signa | 6,195.05 mi (9,969.97 km) |
| Santa Monica to Silea | 6,132.19 mi (9,868.80 km) |
| Santa Monica to Silvi Paese | 6,356.54 mi (10,229.87 km) |
| Santa Monica to Sinalunga | 6,245.45 mi (10,051.07 km) |
| Santa Monica to Siniscola | 6,318.06 mi (10,167.94 km) |
| Santa Monica to Sinnai | 6,367.44 mi (10,247.40 km) |
| Santa Monica to Siracusa | 6,695.34 mi (10,775.10 km) |
| Santa Monica to Solaro | 6,034.51 mi (9,711.60 km) |
| Santa Monica to Soliera | 6,138.78 mi (9,879.42 km) |
