| Iowa City to Marshall (Minnesota) | 288.86 mi (464.88 km) |
| Iowa City to Marshall (Missouri) | 196.35 mi (316.00 km) |
| Iowa City to Marshall (Texas) | 648.85 mi (1,044.22 km) |
| Iowa City to Marshalltown (Iowa) | 75.52 mi (121.54 km) |
| Iowa City to Marshfield (Wisconsin) | 218.72 mi (351.99 km) |
| Iowa City to Martha Lake (Washington) | 1,554.56 mi (2,501.82 km) |
| Iowa City to Martin (Tennessee) | 394.50 mi (634.88 km) |
| Iowa City to Martinez (California) | 1,633.73 mi (2,629.23 km) |
| Iowa City to Martinez (Georgia) | 762.31 mi (1,226.82 km) |
| Iowa City to Martinsburg (West Virginia) | 726.64 mi (1,169.41 km) |
| Iowa City to Martinsville (Indiana) | 309.21 mi (497.62 km) |
| Iowa City to Martinsville (New Jersey) | 883.96 mi (1,422.59 km) |
| Iowa City to Martinsville (Virginia) | 712.29 mi (1,146.33 km) |
| Iowa City to Maryland City (Maryland) | 793.81 mi (1,277.51 km) |
| Iowa City to Maryland Heights (Missouri) | 210.43 mi (338.65 km) |
