| Iowa City to Mauldin (South Carolina) | 689.47 mi (1,109.60 km) |
| Iowa City to Maumee (Ohio) | 406.28 mi (653.84 km) |
| Iowa City to Maumelle (Arkansas) | 472.44 mi (760.33 km) |
| Iowa City to Mayagüez (Puerto Rico) | 2,165.94 mi (3,485.74 km) |
| Iowa City to Mayfield Heights (Ohio) | 520.55 mi (837.75 km) |
| Iowa City to Mays Chapel (Maryland) | 795.06 mi (1,279.52 km) |
| Iowa City to Maywood (California) | 1,540.78 mi (2,479.64 km) |
| Iowa City to Maywood (Illinois) | 190.57 mi (306.69 km) |
| Iowa City to McAlester (Oklahoma) | 518.65 mi (834.69 km) |
| Iowa City to McAllen (Texas) | 1,132.58 mi (1,822.71 km) |
| Iowa City to McCalla (Alabama) | 627.46 mi (1,009.80 km) |
| Iowa City to McComb (Mississippi) | 721.76 mi (1,161.57 km) |
| Iowa City to McDonough (Georgia) | 696.30 mi (1,120.59 km) |
| Iowa City to McFarland (California) | 1,543.47 mi (2,483.97 km) |
| Iowa City to McHenry (Illinois) | 172.77 mi (278.05 km) |
