| Iowa City to Santa Ursula | 4,209.21 mi (6,774.07 km) |
| Iowa City to Santander | 4,242.16 mi (6,827.09 km) |
| Iowa City to Santany | 4,698.61 mi (7,561.68 km) |
| Iowa City to Santiago de Compostela | 4,057.65 mi (6,530.15 km) |
| Iowa City to Santiago del Teide | 4,198.05 mi (6,756.11 km) |
| Iowa City to Santiponce | 4,367.47 mi (7,028.77 km) |
| Iowa City to Santomera | 4,568.43 mi (7,352.18 km) |
| Iowa City to Santona | 4,257.75 mi (6,852.18 km) |
| Iowa City to Santurce-Antiguo | 4,279.95 mi (6,887.92 km) |
| Iowa City to Sarria | 4,110.36 mi (6,614.98 km) |
| Iowa City to Sauzal | 4,209.90 mi (6,775.17 km) |
| Iowa City to Sedavi | 4,543.47 mi (7,312.01 km) |
| Iowa City to Segorbe | 4,522.11 mi (7,277.64 km) |
| Iowa City to Segovia | 4,321.31 mi (6,954.48 km) |
| Iowa City to Senmanat | 4,564.93 mi (7,346.54 km) |
