| Mason City to Wanaque (New Jersey) | 978.17 mi (1,574.21 km) |
| Mason City to Wantagh (New York) | 1,024.35 mi (1,648.53 km) |
| Mason City to Warner Robins (Georgia) | 894.62 mi (1,439.75 km) |
| Mason City to Warr Acres (Oklahoma) | 576.80 mi (928.27 km) |
| Mason City to Warren (Michigan) | 517.20 mi (832.35 km) |
| Mason City to Warren (Ohio) | 646.79 mi (1,040.90 km) |
| Mason City to Warrensburg (Missouri) | 304.28 mi (489.70 km) |
| Mason City to Warrensville Heights (Ohio) | 607.91 mi (978.34 km) |
| Mason City to Warrenville (Illinois) | 271.40 mi (436.77 km) |
| Mason City to Warrington (Florida) | 939.95 mi (1,512.71 km) |
| Mason City to Warsaw (Indiana) | 398.55 mi (641.40 km) |
| Mason City to Warwick (Rhode Island) | 1,111.40 mi (1,788.62 km) |
| Mason City to Wasco (California) | 1,484.45 mi (2,389.00 km) |
| Mason City to Washington (District of Columbia) | 891.32 mi (1,434.44 km) |
| Mason City to Washington (Illinois) | 256.82 mi (413.31 km) |
