| Iowa City to Sereflikochisar | 5,885.97 mi (9,472.55 km) |
| Iowa City to Serik | 5,912.78 mi (9,515.69 km) |
| Iowa City to Serinhisar | 5,813.22 mi (9,355.47 km) |
| Iowa City to Serinyol | 6,115.69 mi (9,842.25 km) |
| Iowa City to Seydisehir | 5,911.79 mi (9,514.11 km) |
| Iowa City to Seyhan | 6,052.87 mi (9,741.16 km) |
| Iowa City to Seyitgazi | 5,763.62 mi (9,275.65 km) |
| Iowa City to Siirt | 6,206.51 mi (9,988.41 km) |
| Iowa City to Sile | 5,635.34 mi (9,069.21 km) |
| Iowa City to Silifke | 6,039.45 mi (9,719.55 km) |
| Iowa City to Silivri | 5,594.44 mi (9,003.38 km) |
| Iowa City to Silopi | 6,261.35 mi (10,076.67 km) |
| Iowa City to Simav | 5,724.01 mi (9,211.90 km) |
| Iowa City to Sinanpasa | 5,785.47 mi (9,310.81 km) |
| Iowa City to Sindirgi | 5,687.57 mi (9,153.26 km) |
