| Fort Washington to Sinop | 5,419.87 mi (8,722.44 km) |
| Fort Washington to Siran | 5,657.13 mi (9,104.27 km) |
| Fort Washington to Sirnak | 5,914.31 mi (9,518.17 km) |
| Fort Washington to Sirvan | 5,870.80 mi (9,448.15 km) |
| Fort Washington to Sivas | 5,598.55 mi (9,010.00 km) |
| Fort Washington to Sivasli | 5,364.63 mi (8,633.53 km) |
| Fort Washington to Siverek | 5,783.81 mi (9,308.14 km) |
| Fort Washington to Sivrice | 5,749.42 mi (9,252.79 km) |
| Fort Washington to Sivrihisar | 5,397.00 mi (8,685.64 km) |
| Fort Washington to Sogut | 5,316.69 mi (8,556.38 km) |
| Fort Washington to Sogutlu | 5,289.60 mi (8,512.80 km) |
| Fort Washington to Soke | 5,301.66 mi (8,532.20 km) |
| Fort Washington to Solhan | 5,789.22 mi (9,316.84 km) |
| Fort Washington to Soma | 5,247.50 mi (8,445.04 km) |
| Fort Washington to Sorgun | 5,524.96 mi (8,891.56 km) |
