| Echelon to Sinop | 5,289.31 mi (8,512.33 km) |
| Echelon to Siran | 5,526.86 mi (8,894.62 km) |
| Echelon to Sirnak | 5,784.04 mi (9,308.52 km) |
| Echelon to Sirvan | 5,740.58 mi (9,238.58 km) |
| Echelon to Sivas | 5,467.74 mi (8,799.48 km) |
| Echelon to Sivasli | 5,232.64 mi (8,421.11 km) |
| Echelon to Siverek | 5,652.94 mi (9,097.52 km) |
| Echelon to Sivrice | 5,618.71 mi (9,042.45 km) |
| Echelon to Sivrihisar | 5,265.32 mi (8,473.72 km) |
| Echelon to Sogut | 5,184.95 mi (8,344.38 km) |
| Echelon to Sogutlu | 5,158.06 mi (8,301.10 km) |
| Echelon to Soke | 5,169.47 mi (8,319.46 km) |
| Echelon to Solhan | 5,659.03 mi (9,107.32 km) |
| Echelon to Soma | 5,115.45 mi (8,232.51 km) |
| Echelon to Sorgun | 5,393.85 mi (8,680.56 km) |
