| Mason City to Hillcrest Heights (Maryland) | 895.80 mi (1,441.66 km) |
| Mason City to Hilliard (Ohio) | 561.26 mi (903.26 km) |
| Mason City to Hillsboro (Oregon) | 1,470.15 mi (2,365.97 km) |
| Mason City to Hillsborough (California) | 1,574.48 mi (2,533.88 km) |
| Mason City to Hillsborough (New Jersey) | 970.09 mi (1,561.21 km) |
| Mason City to Hilo (Hawaii) | 3,893.50 mi (6,265.98 km) |
| Mason City to Hilton Head Island (South Carolina) | 1,016.04 mi (1,635.15 km) |
| Mason City to Hinesville (Georgia) | 1,005.73 mi (1,618.57 km) |
| Mason City to Hinsdale (Illinois) | 284.31 mi (457.56 km) |
| Mason City to Hobart (Indiana) | 323.02 mi (519.85 km) |
| Mason City to Hobbs (New Mexico) | 900.22 mi (1,448.77 km) |
| Mason City to Hobe Sound (Florida) | 1,329.92 mi (2,140.29 km) |
| Mason City to Hoboken (New Jersey) | 996.83 mi (1,604.24 km) |
| Mason City to Hockessin (Delaware) | 934.40 mi (1,503.77 km) |
| Mason City to Hoffman Estates (Illinois) | 267.62 mi (430.69 km) |
