| Iowa City to Snodland | 4,132.72 mi (6,650.97 km) |
| Iowa City to Soham | 4,093.92 mi (6,588.54 km) |
| Iowa City to Solihull | 4,013.28 mi (6,458.75 km) |
| Iowa City to Sompting | 4,120.47 mi (6,631.26 km) |
| Iowa City to South Hayling | 4,097.80 mi (6,594.78 km) |
| Iowa City to South Normanton | 4,006.58 mi (6,447.97 km) |
| Iowa City to South Ockendon | 4,120.40 mi (6,631.15 km) |
| Iowa City to South Shields | 3,942.89 mi (6,345.47 km) |
| Iowa City to Southall | 4,095.59 mi (6,591.21 km) |
| Iowa City to Southampton | 4,077.67 mi (6,562.38 km) |
| Iowa City to Southborough | 4,131.79 mi (6,649.48 km) |
| Iowa City to Southbourne | 4,068.78 mi (6,548.08 km) |
| Iowa City to Southend | 4,134.78 mi (6,654.29 km) |
| Iowa City to Southgate | 4,100.87 mi (6,599.72 km) |
| Iowa City to Southport | 3,928.56 mi (6,322.41 km) |
