| Sioux City to Santarem | 4,369.93 mi (7,032.72 km) |
| Sioux City to Santiago do Cacem | 4,417.13 mi (7,108.68 km) |
| Sioux City to Santo Andre | 4,413.58 mi (7,102.97 km) |
| Sioux City to Santo Tirso | 4,298.38 mi (6,917.58 km) |
| Sioux City to Sao Bras de Alportel | 4,488.20 mi (7,223.06 km) |
| Sioux City to Sao Felix da Marinha | 4,303.07 mi (6,925.12 km) |
| Sioux City to Sao Joao da Madeira | 4,314.14 mi (6,942.93 km) |
| Sioux City to Sao Joao de Ver | 4,309.26 mi (6,935.09 km) |
| Sioux City to Sao Mamede de Infesta | 4,297.71 mi (6,916.50 km) |
| Sioux City to Sao Pedro do Sul | 4,338.13 mi (6,981.55 km) |
| Sioux City to Satao | 4,353.23 mi (7,005.85 km) |
| Sioux City to Seia | 4,366.68 mi (7,027.49 km) |
| Sioux City to Senhora da Hora | 4,296.04 mi (6,913.81 km) |
| Sioux City to Serpa | 4,469.04 mi (7,192.22 km) |
| Sioux City to Serta | 4,373.60 mi (7,038.62 km) |
