| Mason City to Sugar Hill (Georgia) | 795.05 mi (1,279.51 km) |
| Mason City to Sugar Land (Texas) | 946.21 mi (1,522.78 km) |
| Mason City to Sugarland Run (Virginia) | 870.11 mi (1,400.30 km) |
| Mason City to Sugarmill Woods (Florida) | 1,159.93 mi (1,866.73 km) |
| Mason City to Suisun City (California) | 1,538.53 mi (2,476.03 km) |
| Mason City to Suitland (Maryland) | 897.50 mi (1,444.38 km) |
| Mason City to Sulphur (Louisiana) | 892.73 mi (1,436.72 km) |
| Mason City to Sulphur Springs (Texas) | 703.62 mi (1,132.36 km) |
| Mason City to Summerfield (Maryland) | 898.61 mi (1,446.17 km) |
| Mason City to Summerfield (North Carolina) | 853.33 mi (1,373.30 km) |
| Mason City to Summerlin South (Nevada) | 1,268.89 mi (2,042.07 km) |
| Mason City to Summerville (South Carolina) | 994.21 mi (1,600.03 km) |
| Mason City to Summit (Illinois) | 290.06 mi (466.80 km) |
| Mason City to Summit (New Jersey) | 980.46 mi (1,577.89 km) |
| Mason City to Sumner (Washington) | 1,432.91 mi (2,306.04 km) |
