| Iowa City to Sonneberg | 4,559.16 mi (7,337.25 km) |
| Iowa City to Sonsbeck | 4,338.97 mi (6,982.90 km) |
| Iowa City to Sonthofen | 4,645.85 mi (7,476.77 km) |
| Iowa City to Spaichingen | 4,565.35 mi (7,347.22 km) |
| Iowa City to Spelle | 4,348.30 mi (6,997.92 km) |
| Iowa City to Spenge | 4,392.90 mi (7,069.68 km) |
| Iowa City to Speyer | 4,503.38 mi (7,247.49 km) |
| Iowa City to Spiesen-Elversberg | 4,455.86 mi (7,171.02 km) |
| Iowa City to Spremberg | 4,617.83 mi (7,431.68 km) |
| Iowa City to Springe | 4,426.58 mi (7,123.89 km) |
| Iowa City to Sprockhovel | 4,379.47 mi (7,048.07 km) |
| Iowa City to Stade | 4,369.11 mi (7,031.40 km) |
| Iowa City to Stadtallendorf | 4,463.40 mi (7,183.15 km) |
| Iowa City to Stadthagen | 4,410.43 mi (7,097.89 km) |
| Iowa City to Stadtlohn | 4,343.35 mi (6,989.94 km) |
