| Iowa City to Ross on Wye | 3,999.37 mi (6,436.37 km) |
| Iowa City to Rossington | 4,004.79 mi (6,445.08 km) |
| Iowa City to Rosyth | 3,840.96 mi (6,181.42 km) |
| Iowa City to Rotherham | 3,995.55 mi (6,430.22 km) |
| Iowa City to Rothwell | 3,980.86 mi (6,406.58 km) |
| Iowa City to Rottingdean | 4,131.37 mi (6,648.80 km) |
| Iowa City to Rowley Regis | 4,000.74 mi (6,438.56 km) |
| Iowa City to Royal Leamington Spa | 4,026.20 mi (6,479.55 km) |
| Iowa City to Royal Tunbridge Wells | 4,132.68 mi (6,650.90 km) |
| Iowa City to Royal Wootton Bassett | 4,037.76 mi (6,498.15 km) |
| Iowa City to Royston | 3,986.34 mi (6,415.40 km) |
| Iowa City to Royston | 4,090.60 mi (6,583.19 km) |
| Iowa City to Royton | 3,963.39 mi (6,378.45 km) |
| Iowa City to Rugby | 4,033.89 mi (6,491.92 km) |
| Iowa City to Rugeley | 3,996.01 mi (6,430.95 km) |
