| Poplar Bluff to Sestu | 5,108.51 mi (8,221.36 km) |
| Poplar Bluff to Settimo Torinese | 4,829.12 mi (7,771.71 km) |
| Poplar Bluff to Seveso | 4,866.04 mi (7,831.14 km) |
| Poplar Bluff to Sezze | 5,190.60 mi (8,353.47 km) |
| Poplar Bluff to Siano | 5,287.28 mi (8,509.05 km) |
| Poplar Bluff to Siena | 5,045.50 mi (8,119.94 km) |
| Poplar Bluff to Signa | 5,017.65 mi (8,075.13 km) |
| Poplar Bluff to Silea | 4,992.20 mi (8,034.17 km) |
| Poplar Bluff to Silvi Paese | 5,190.83 mi (8,353.83 km) |
| Poplar Bluff to Sinalunga | 5,066.08 mi (8,153.07 km) |
| Poplar Bluff to Siniscola | 5,084.70 mi (8,183.04 km) |
| Poplar Bluff to Sinnai | 5,113.28 mi (8,229.03 km) |
| Poplar Bluff to Siracusa | 5,470.56 mi (8,804.02 km) |
| Poplar Bluff to Solaro | 4,864.94 mi (7,829.37 km) |
| Poplar Bluff to Soliera | 4,973.14 mi (8,003.49 km) |
