| South San Francisco to Sinop | 6,753.06 mi (10,867.99 km) |
| South San Francisco to Siran | 6,932.82 mi (11,157.30 km) |
| South San Francisco to Sirnak | 7,154.01 mi (11,513.26 km) |
| South San Francisco to Sirvan | 7,112.28 mi (11,446.11 km) |
| South San Francisco to Sivas | 6,932.03 mi (11,156.03 km) |
| South San Francisco to Sivasli | 6,884.94 mi (11,080.25 km) |
| South San Francisco to Siverek | 7,098.41 mi (11,423.79 km) |
| South San Francisco to Sivrice | 7,051.79 mi (11,348.75 km) |
| South San Francisco to Sivrihisar | 6,859.00 mi (11,038.49 km) |
| South San Francisco to Sogut | 6,796.39 mi (10,937.73 km) |
| South San Francisco to Sogutlu | 6,745.53 mi (10,855.88 km) |
| South San Francisco to Soke | 6,883.39 mi (11,077.75 km) |
| South San Francisco to Solhan | 7,039.56 mi (11,329.08 km) |
| South San Francisco to Soma | 6,796.75 mi (10,938.32 km) |
| South San Francisco to Sorgun | 6,899.23 mi (11,103.24 km) |
