| Iowa City to Solofra | 5,114.83 mi (8,231.53 km) |
| Iowa City to Somma Lombardo | 4,663.09 mi (7,504.52 km) |
| Iowa City to Somma Vesuviana | 5,096.91 mi (8,202.68 km) |
| Iowa City to Sommacampagna | 4,757.23 mi (7,656.01 km) |
| Iowa City to Sona | 4,755.16 mi (7,652.69 km) |
| Iowa City to Sondrio | 4,687.25 mi (7,543.40 km) |
| Iowa City to Sora | 5,026.43 mi (8,089.26 km) |
| Iowa City to Sorbolo | 4,765.72 mi (7,669.68 km) |
| Iowa City to Soresina | 4,724.22 mi (7,602.89 km) |
| Iowa City to Sorisole | 4,697.42 mi (7,559.76 km) |
| Iowa City to Sorrento | 5,105.65 mi (8,216.75 km) |
| Iowa City to Sorso | 4,865.97 mi (7,831.02 km) |
| Iowa City to Sortino | 5,292.30 mi (8,517.13 km) |
| Iowa City to Soverato Marina | 5,281.70 mi (8,500.07 km) |
| Iowa City to Sovicille | 4,863.85 mi (7,827.61 km) |
