| San Francisco to Sestu | 6,289.22 mi (10,121.52 km) |
| San Francisco to Settimo Torinese | 5,925.69 mi (9,536.48 km) |
| San Francisco to Seveso | 5,937.33 mi (9,555.21 km) |
| San Francisco to Sezze | 6,284.56 mi (10,114.02 km) |
| San Francisco to Siano | 6,371.17 mi (10,253.41 km) |
| San Francisco to Siena | 6,130.90 mi (9,866.72 km) |
| San Francisco to Signa | 6,097.92 mi (9,813.65 km) |
| San Francisco to Silea | 6,024.84 mi (9,696.04 km) |
| San Francisco to Silvi Paese | 6,253.50 mi (10,064.03 km) |
| San Francisco to Sinalunga | 6,148.17 mi (9,894.53 km) |
| San Francisco to Siniscola | 6,236.90 mi (10,037.32 km) |
| San Francisco to Sinnai | 6,292.56 mi (10,126.89 km) |
| San Francisco to Siracusa | 6,606.00 mi (10,631.34 km) |
| San Francisco to Solaro | 5,937.37 mi (9,555.28 km) |
| San Francisco to Soliera | 6,038.92 mi (9,718.71 km) |
