| Iowa City to Joliet (Illinois) | 174.94 mi (281.53 km) |
| Iowa City to Jonesboro (Arkansas) | 405.73 mi (652.97 km) |
| Iowa City to Joplin (Missouri) | 353.98 mi (569.67 km) |
| Iowa City to Joppatowne (Maryland) | 810.76 mi (1,304.80 km) |
| Iowa City to Juana Díaz (Puerto Rico) | 2,198.97 mi (3,538.91 km) |
| Iowa City to Junction City (Kansas) | 333.79 mi (537.18 km) |
| Iowa City to Juneau (Alaska) | 2,166.36 mi (3,486.42 km) |
| Iowa City to Jupiter (Florida) | 1,206.39 mi (1,941.49 km) |
| Iowa City to Jupiter Farms (Florida) | 1,203.04 mi (1,936.11 km) |
| Iowa City to Jurupa Valley (California) | 1,504.13 mi (2,420.66 km) |
| Iowa City to Justice (Illinois) | 190.74 mi (306.97 km) |
| Iowa City to Kahului (Hawaii) | 3,994.83 mi (6,429.06 km) |
| Iowa City to Kailua (Hawaii) | 4,039.33 mi (6,500.67 km) |
| Iowa City to Kalamazoo (Michigan) | 308.19 mi (495.98 km) |
| Iowa City to Kalispell (Montana) | 1,197.94 mi (1,927.90 km) |
