| Big Spring to Sinop | 6,613.41 mi (10,643.25 km) |
| Big Spring to Siran | 6,834.89 mi (10,999.69 km) |
| Big Spring to Sirnak | 7,086.07 mi (11,403.92 km) |
| Big Spring to Sirvan | 7,041.76 mi (11,332.62 km) |
| Big Spring to Sivas | 6,798.12 mi (10,940.52 km) |
| Big Spring to Sivasli | 6,630.23 mi (10,670.33 km) |
| Big Spring to Siverek | 6,981.86 mi (11,236.23 km) |
| Big Spring to Sivrice | 6,941.33 mi (11,171.00 km) |
| Big Spring to Sivrihisar | 6,641.31 mi (10,688.15 km) |
| Big Spring to Sogut | 6,565.47 mi (10,566.10 km) |
| Big Spring to Sogutlu | 6,528.35 mi (10,506.36 km) |
| Big Spring to Soke | 6,588.24 mi (10,602.75 km) |
| Big Spring to Solhan | 6,961.00 mi (11,202.65 km) |
| Big Spring to Soma | 6,520.70 mi (10,494.05 km) |
| Big Spring to Sorgun | 6,738.62 mi (10,844.77 km) |
