| Iowa City to Jacksonville (Texas) | 700.52 mi (1,127.39 km) |
| Iowa City to Jacksonville Beach (Florida) | 967.27 mi (1,556.67 km) |
| Iowa City to James Island (South Carolina) | 885.50 mi (1,425.07 km) |
| Iowa City to Jamestown (New York) | 632.64 mi (1,018.14 km) |
| Iowa City to Jamestown (North Dakota) | 506.69 mi (815.45 km) |
| Iowa City to Janesville (Wisconsin) | 147.20 mi (236.89 km) |
| Iowa City to Jasmine Estates (Florida) | 1,048.78 mi (1,687.85 km) |
| Iowa City to Jasper (Alabama) | 587.13 mi (944.89 km) |
| Iowa City to Jasper (Indiana) | 331.26 mi (533.11 km) |
| Iowa City to Jefferson (Georgia) | 675.17 mi (1,086.58 km) |
| Iowa City to Jefferson (Louisiana) | 811.68 mi (1,306.27 km) |
| Iowa City to Jefferson City (Missouri) | 216.09 mi (347.76 km) |
| Iowa City to Jefferson Hills (Pennsylvania) | 611.79 mi (984.58 km) |
| Iowa City to Jefferson Valley-Yorktown (New York) | 916.33 mi (1,474.68 km) |
| Iowa City to Jeffersontown (Kentucky) | 395.53 mi (636.54 km) |
