| Foster City to Sestu | 6,294.82 mi (10,130.53 km) |
| Foster City to Settimo Torinese | 5,932.05 mi (9,546.71 km) |
| Foster City to Seveso | 5,943.98 mi (9,565.91 km) |
| Foster City to Sezze | 6,291.19 mi (10,124.70 km) |
| Foster City to Siano | 6,377.99 mi (10,264.38 km) |
| Foster City to Siena | 6,137.52 mi (9,877.39 km) |
| Foster City to Signa | 6,104.58 mi (9,824.37 km) |
| Foster City to Silea | 6,031.98 mi (9,707.54 km) |
| Foster City to Silvi Paese | 6,260.47 mi (10,075.25 km) |
| Foster City to Sinalunga | 6,154.85 mi (9,905.28 km) |
| Foster City to Siniscola | 6,242.82 mi (10,046.84 km) |
| Foster City to Sinnai | 6,298.18 mi (10,135.94 km) |
| Foster City to Siracusa | 6,612.37 mi (10,641.58 km) |
| Foster City to Solaro | 5,944.01 mi (9,565.96 km) |
| Foster City to Soliera | 6,045.71 mi (9,729.63 km) |
