| South Houston to Sinop | 6,562.77 mi (10,561.77 km) |
| South Houston to Siran | 6,793.37 mi (10,932.87 km) |
| South Houston to Sirnak | 7,048.96 mi (11,344.21 km) |
| South Houston to Sirvan | 7,004.79 mi (11,273.13 km) |
| South Houston to Sivas | 6,745.39 mi (10,855.65 km) |
| South Houston to Sivasli | 6,540.79 mi (10,526.39 km) |
| South Houston to Siverek | 6,930.86 mi (11,154.15 km) |
| South Houston to Sivrice | 6,893.27 mi (11,093.65 km) |
| South Houston to Sivrihisar | 6,563.98 mi (10,563.71 km) |
| South Houston to Sogut | 6,485.34 mi (10,437.14 km) |
| South Houston to Sogutlu | 6,453.59 mi (10,386.05 km) |
| South Houston to Soke | 6,486.20 mi (10,438.52 km) |
| South Houston to Solhan | 6,923.16 mi (11,141.75 km) |
| South Houston to Soma | 6,426.42 mi (10,342.33 km) |
| South Houston to Sorgun | 6,678.27 mi (10,747.63 km) |
