| Iowa City to San Lorenzo de Descardazar | 4,694.85 mi (7,555.63 km) |
| Iowa City to San Lorenzo de El Escorial | 4,333.51 mi (6,974.11 km) |
| Iowa City to San Martin de la Vega | 4,373.16 mi (7,037.91 km) |
| Iowa City to San Martin de Valdeiglesias | 4,330.72 mi (6,969.63 km) |
| Iowa City to San Pedro de Ribas | 4,563.55 mi (7,344.32 km) |
| Iowa City to San Roque | 4,444.89 mi (7,153.36 km) |
| Iowa City to San Sebastian de la Gomera | 4,191.12 mi (6,744.96 km) |
| Iowa City to San Sebastian de los Reyes | 4,358.02 mi (7,013.56 km) |
| Iowa City to San Vicente de Baracaldo | 4,282.86 mi (6,892.60 km) |
| Iowa City to San Vicente de Castellet | 4,551.20 mi (7,324.45 km) |
| Iowa City to San Vicente del Raspeig | 4,578.30 mi (7,368.06 km) |
| Iowa City to San Vicente dels Horts | 4,568.21 mi (7,351.83 km) |
| Iowa City to Sangenjo | 4,062.48 mi (6,537.92 km) |
| Iowa City to Sanlucar de Barrameda | 4,378.90 mi (7,047.16 km) |
| Iowa City to Sanlucar la Mayor | 4,362.28 mi (7,020.42 km) |
