| Mason City to Kennewick (Washington) | 1,287.49 mi (2,072.02 km) |
| Mason City to Kenosha (Wisconsin) | 272.26 mi (438.17 km) |
| Mason City to Kent (Ohio) | 621.41 mi (1,000.06 km) |
| Mason City to Kent (Washington) | 1,432.09 mi (2,304.73 km) |
| Mason City to Kentwood (Michigan) | 384.59 mi (618.94 km) |
| Mason City to Kerman (California) | 1,483.33 mi (2,387.18 km) |
| Mason City to Kernersville (North Carolina) | 849.20 mi (1,366.66 km) |
| Mason City to Kerrville (Texas) | 963.00 mi (1,549.80 km) |
| Mason City to Kettering (Maryland) | 902.91 mi (1,453.10 km) |
| Mason City to Kettering (Ohio) | 525.70 mi (846.04 km) |
| Mason City to Kewanee (Illinois) | 213.21 mi (343.12 km) |
| Mason City to Key Biscayne (Florida) | 1,412.72 mi (2,273.56 km) |
| Mason City to Key Largo (Florida) | 1,440.43 mi (2,318.14 km) |
| Mason City to Key West (Florida) | 1,438.40 mi (2,314.88 km) |
| Mason City to Keystone (Florida) | 1,193.89 mi (1,921.38 km) |
