| Frederick to Sinop | 5,400.74 mi (8,691.64 km) |
| Frederick to Siran | 5,637.33 mi (9,072.40 km) |
| Frederick to Sirnak | 5,894.48 mi (9,486.24 km) |
| Frederick to Sirvan | 5,850.86 mi (9,416.06 km) |
| Frederick to Sivas | 5,580.01 mi (8,980.17 km) |
| Frederick to Sivasli | 5,350.36 mi (8,610.57 km) |
| Frederick to Siverek | 5,765.40 mi (9,278.51 km) |
| Frederick to Sivrice | 5,730.59 mi (9,222.49 km) |
| Frederick to Sivrihisar | 5,381.21 mi (8,660.23 km) |
| Frederick to Sogut | 5,301.13 mi (8,531.34 km) |
| Frederick to Sogutlu | 5,273.30 mi (8,486.56 km) |
| Frederick to Soke | 5,288.96 mi (8,511.76 km) |
| Frederick to Solhan | 5,769.22 mi (9,284.67 km) |
| Frederick to Soma | 5,233.69 mi (8,422.81 km) |
| Frederick to Sorgun | 5,507.23 mi (8,863.04 km) |
