| Poplar Bluff to Santarem | 4,291.13 mi (6,905.91 km) |
| Poplar Bluff to Santiago do Cacem | 4,328.01 mi (6,965.26 km) |
| Poplar Bluff to Santo Andre | 4,324.54 mi (6,959.68 km) |
| Poplar Bluff to Santo Tirso | 4,238.46 mi (6,821.14 km) |
| Poplar Bluff to Sao Bras de Alportel | 4,395.14 mi (7,073.29 km) |
| Poplar Bluff to Sao Felix da Marinha | 4,239.97 mi (6,823.57 km) |
| Poplar Bluff to Sao Joao da Madeira | 4,250.35 mi (6,840.28 km) |
| Poplar Bluff to Sao Joao de Ver | 4,245.73 mi (6,832.85 km) |
| Poplar Bluff to Sao Mamede de Infesta | 4,236.14 mi (6,817.41 km) |
| Poplar Bluff to Sao Pedro do Sul | 4,274.65 mi (6,879.39 km) |
| Poplar Bluff to Satao | 4,290.86 mi (6,905.47 km) |
| Poplar Bluff to Seia | 4,301.76 mi (6,923.01 km) |
| Poplar Bluff to Senhora da Hora | 4,234.16 mi (6,814.22 km) |
| Poplar Bluff to Serpa | 4,383.68 mi (7,054.85 km) |
| Poplar Bluff to Serta | 4,301.86 mi (6,923.18 km) |
