| Iowa City to Oswaldtwistle | 3,947.88 mi (6,353.49 km) |
| Iowa City to Oswestry | 3,951.56 mi (6,359.42 km) |
| Iowa City to Otley | 3,968.29 mi (6,386.35 km) |
| Iowa City to Ovenden | 3,966.56 mi (6,383.56 km) |
| Iowa City to Oxford | 4,054.57 mi (6,525.20 km) |
| Iowa City to Oxted | 4,118.27 mi (6,627.71 km) |
| Iowa City to Padbury | 4,058.63 mi (6,531.74 km) |
| Iowa City to Padiham | 3,949.15 mi (6,355.54 km) |
| Iowa City to Paignton | 4,010.48 mi (6,454.24 km) |
| Iowa City to Paisley | 3,811.62 mi (6,134.22 km) |
| Iowa City to Palmers Green | 4,101.99 mi (6,601.51 km) |
| Iowa City to Parkstone | 4,063.38 mi (6,539.38 km) |
| Iowa City to Partick | 3,814.85 mi (6,139.41 km) |
| Iowa City to Patcham | 4,126.46 mi (6,640.90 km) |
| Iowa City to Peebles | 3,860.79 mi (6,213.34 km) |
