| Iowa City to Seysses | 4,456.03 mi (7,171.29 km) |
| Iowa City to Sin-le-Noble | 4,266.74 mi (6,866.66 km) |
| Iowa City to Six-Fours-les-Plages | 4,656.63 mi (7,494.12 km) |
| Iowa City to Soissons | 4,311.14 mi (6,938.12 km) |
| Iowa City to Soisy-sous-Montmorency | 4,286.89 mi (6,899.08 km) |
| Iowa City to Sollies-Pont | 4,661.89 mi (7,502.59 km) |
| Iowa City to Somain | 4,273.18 mi (6,877.01 km) |
| Iowa City to Sorgues | 4,581.31 mi (7,372.90 km) |
| Iowa City to Sotteville-les-Rouen | 4,225.14 mi (6,799.71 km) |
| Iowa City to Soyaux | 4,328.57 mi (6,966.17 km) |
| Iowa City to Stains | 4,291.49 mi (6,906.49 km) |
| Iowa City to Stiring-Wendel | 4,452.96 mi (7,166.35 km) |
| Iowa City to Strasbourg | 4,507.87 mi (7,254.72 km) |
| Iowa City to Sucy-en-Brie | 4,303.54 mi (6,925.88 km) |
| Iowa City to Suresnes | 4,288.20 mi (6,901.19 km) |
