| Iowa City to Senftenberg | 4,608.00 mi (7,415.85 km) |
| Iowa City to Siegburg | 4,399.91 mi (7,080.98 km) |
| Iowa City to Siegen | 4,425.81 mi (7,122.65 km) |
| Iowa City to Sigmaringen | 4,582.64 mi (7,375.05 km) |
| Iowa City to Simbach am Inn | 4,713.40 mi (7,585.48 km) |
| Iowa City to Simmerath | 4,375.05 mi (7,040.96 km) |
| Iowa City to Sindelfingen | 4,548.99 mi (7,320.88 km) |
| Iowa City to Sinsheim | 4,522.69 mi (7,278.56 km) |
| Iowa City to Sinzheim | 4,516.24 mi (7,268.19 km) |
| Iowa City to Sinzig | 4,411.67 mi (7,099.90 km) |
| Iowa City to Soest | 4,401.92 mi (7,084.21 km) |
| Iowa City to Solingen | 4,381.30 mi (7,051.03 km) |
| Iowa City to Soltau | 4,405.66 mi (7,090.22 km) |
| Iowa City to Sommerda | 4,523.74 mi (7,280.25 km) |
| Iowa City to Sondershausen | 4,506.61 mi (7,252.68 km) |
