| Poplar Bluff to Sesimbra | 4,295.40 mi (6,912.78 km) |
| Poplar Bluff to Setubal | 4,302.95 mi (6,924.92 km) |
| Poplar Bluff to Sever do Vouga | 4,261.01 mi (6,857.42 km) |
| Poplar Bluff to Silves | 4,366.81 mi (7,027.70 km) |
| Poplar Bluff to Sines | 4,321.95 mi (6,955.50 km) |
| Poplar Bluff to Sintra | 4,270.55 mi (6,872.79 km) |
| Poplar Bluff to Sobrado de Paiva | 4,256.76 mi (6,850.59 km) |
| Poplar Bluff to Sobral de Monte Agraco | 4,275.30 mi (6,880.44 km) |
| Poplar Bluff to Soure | 4,268.89 mi (6,870.12 km) |
| Poplar Bluff to Tabua | 4,288.18 mi (6,901.16 km) |
| Poplar Bluff to Tavira | 4,407.59 mi (7,093.33 km) |
| Poplar Bluff to Tomar | 4,292.86 mi (6,908.69 km) |
| Poplar Bluff to Tondela | 4,280.90 mi (6,889.44 km) |
| Poplar Bluff to Torre de Moncorvo | 4,304.86 mi (6,928.00 km) |
| Poplar Bluff to Torres Novas | 4,291.35 mi (6,906.26 km) |
