| Poplar Bluff to Solofra | 5,292.45 mi (8,517.38 km) |
| Poplar Bluff to Somma Lombardo | 4,846.81 mi (7,800.19 km) |
| Poplar Bluff to Somma Vesuviana | 5,273.63 mi (8,487.09 km) |
| Poplar Bluff to Sommacampagna | 4,944.43 mi (7,957.29 km) |
| Poplar Bluff to Sona | 4,942.47 mi (7,954.13 km) |
| Poplar Bluff to Sondrio | 4,875.64 mi (7,846.59 km) |
| Poplar Bluff to Sora | 5,204.58 mi (8,375.97 km) |
| Poplar Bluff to Sorbolo | 4,949.63 mi (7,965.66 km) |
| Poplar Bluff to Soresina | 4,908.73 mi (7,899.83 km) |
| Poplar Bluff to Sorisole | 4,883.46 mi (7,859.17 km) |
| Poplar Bluff to Sorrento | 5,281.21 mi (8,499.28 km) |
| Poplar Bluff to Sorso | 5,027.58 mi (8,091.10 km) |
| Poplar Bluff to Sortino | 5,455.39 mi (8,779.60 km) |
| Poplar Bluff to Soverato Marina | 5,455.10 mi (8,779.13 km) |
| Poplar Bluff to Sovicille | 5,042.83 mi (8,115.65 km) |
