| Mason City to Enterprise (Nevada) | 1,267.71 mi (2,040.18 km) |
| Mason City to Enumclaw (Washington) | 1,421.44 mi (2,287.58 km) |
| Mason City to Ephrata (Pennsylvania) | 900.32 mi (1,448.92 km) |
| Mason City to Erie (Colorado) | 647.72 mi (1,042.40 km) |
| Mason City to Erie (Pennsylvania) | 670.35 mi (1,078.82 km) |
| Mason City to Erlanger (Kentucky) | 531.53 mi (855.42 km) |
| Mason City to Escanaba (Michigan) | 350.66 mi (564.33 km) |
| Mason City to Escondido (California) | 1,462.87 mi (2,354.26 km) |
| Mason City to Española (New Mexico) | 843.02 mi (1,356.72 km) |
| Mason City to Essex (Maryland) | 908.54 mi (1,462.15 km) |
| Mason City to Essex Junction (Vermont) | 1,003.05 mi (1,614.26 km) |
| Mason City to Estelle (Louisiana) | 934.99 mi (1,504.72 km) |
| Mason City to Estero (Florida) | 1,321.28 mi (2,126.40 km) |
| Mason City to Euclid (Ohio) | 605.39 mi (974.29 km) |
| Mason City to Eufaula (Alabama) | 891.98 mi (1,435.51 km) |
