| Iowa City to Ruislip | 4,091.35 mi (6,584.39 km) |
| Iowa City to Runcorn | 3,948.11 mi (6,353.87 km) |
| Iowa City to Rushall | 4,000.18 mi (6,437.66 km) |
| Iowa City to Rushden | 4,060.99 mi (6,535.53 km) |
| Iowa City to Rustington | 4,114.90 mi (6,622.30 km) |
| Iowa City to Rutherglen | 3,819.53 mi (6,146.94 km) |
| Iowa City to Ryde | 4,092.85 mi (6,586.81 km) |
| Iowa City to Rye | 4,156.54 mi (6,689.30 km) |
| Iowa City to Ryhope | 3,949.02 mi (6,355.34 km) |
| Iowa City to Saffron Walden | 4,101.18 mi (6,600.21 km) |
| Iowa City to Saint Albans | 4,088.86 mi (6,580.38 km) |
| Iowa City to Saint Andrews | 3,854.05 mi (6,202.50 km) |
| Iowa City to Saint Austell | 3,965.83 mi (6,382.39 km) |
| Iowa City to Saint Budeaux | 3,987.34 mi (6,417.00 km) |
| Iowa City to Saint Helens | 3,944.10 mi (6,347.41 km) |
