| Iowa City to Rury | 4,896.85 mi (7,880.72 km) |
| Iowa City to Rybnik | 4,823.25 mi (7,762.27 km) |
| Iowa City to Ryki | 4,859.86 mi (7,821.19 km) |
| Iowa City to Rypin | 4,715.70 mi (7,589.19 km) |
| Iowa City to Rzeszow | 4,938.10 mi (7,947.10 km) |
| Iowa City to Sandomierz | 4,899.15 mi (7,884.43 km) |
| Iowa City to Sanok | 4,968.21 mi (7,995.56 km) |
| Iowa City to Sedziszow Malopolski | 4,926.87 mi (7,929.04 km) |
| Iowa City to Sepolno Krajenskie | 4,638.24 mi (7,464.53 km) |
| Iowa City to Sidlice | 4,632.08 mi (7,454.60 km) |
| Iowa City to Siechnice | 4,733.73 mi (7,618.20 km) |
| Iowa City to Siedlce | 4,845.13 mi (7,797.49 km) |
| Iowa City to Siemianowice Slaskie | 4,828.79 mi (7,771.19 km) |
| Iowa City to Siemiatycze | 4,850.77 mi (7,806.56 km) |
| Iowa City to Sieradz | 4,760.40 mi (7,661.13 km) |
