| Poplar Bluff to Sinop | 6,002.27 mi (9,659.72 km) |
| Poplar Bluff to Siran | 6,231.75 mi (10,029.04 km) |
| Poplar Bluff to Sirnak | 6,486.97 mi (10,439.77 km) |
| Poplar Bluff to Sirvan | 6,442.76 mi (10,368.62 km) |
| Poplar Bluff to Sivas | 6,185.34 mi (9,954.34 km) |
| Poplar Bluff to Sivasli | 5,988.76 mi (9,637.98 km) |
| Poplar Bluff to Siverek | 6,370.67 mi (10,252.61 km) |
| Poplar Bluff to Sivrice | 6,332.60 mi (10,191.34 km) |
| Poplar Bluff to Sivrihisar | 6,008.76 mi (9,670.16 km) |
| Poplar Bluff to Sogut | 5,930.73 mi (9,544.59 km) |
| Poplar Bluff to Sogutlu | 5,897.65 mi (9,491.34 km) |
| Poplar Bluff to Soke | 5,938.00 mi (9,556.29 km) |
| Poplar Bluff to Solhan | 6,361.18 mi (10,237.33 km) |
| Poplar Bluff to Soma | 5,875.69 mi (9,456.02 km) |
| Poplar Bluff to Sorgun | 6,119.49 mi (9,848.37 km) |
