| Iowa City to Quarteira | 4,286.45 mi (6,898.37 km) |
| Iowa City to Queluz | 4,170.83 mi (6,712.30 km) |
| Iowa City to Reguengos de Monsaraz | 4,262.45 mi (6,859.75 km) |
| Iowa City to Resende | 4,145.31 mi (6,671.23 km) |
| Iowa City to Ribeira Brava | 4,020.22 mi (6,469.92 km) |
| Iowa City to Ribeira Grande | 3,430.43 mi (5,520.74 km) |
| Iowa City to Rio de Mouro | 4,167.15 mi (6,706.38 km) |
| Iowa City to Rio Maior | 4,165.04 mi (6,702.99 km) |
| Iowa City to Rio Tinto | 4,116.13 mi (6,624.27 km) |
| Iowa City to Sabugal | 4,211.87 mi (6,778.34 km) |
| Iowa City to Sacavem | 4,176.66 mi (6,721.68 km) |
| Iowa City to Salvaterra de Magos | 4,183.34 mi (6,732.43 km) |
| Iowa City to Santa Comba Dao | 4,163.68 mi (6,700.79 km) |
| Iowa City to Santa Cruz | 4,032.53 mi (6,489.74 km) |
| Iowa City to Santa Iria da Azoia | 4,175.56 mi (6,719.92 km) |
