| Mason City to Stephenville (Texas) | 803.40 mi (1,292.94 km) |
| Mason City to Sterling (Colorado) | 542.48 mi (873.04 km) |
| Mason City to Sterling (Illinois) | 201.42 mi (324.15 km) |
| Mason City to Sterling (Virginia) | 869.43 mi (1,399.21 km) |
| Mason City to Sterling Heights (Michigan) | 516.17 mi (830.69 km) |
| Mason City to Steubenville (Ohio) | 673.97 mi (1,084.65 km) |
| Mason City to Stevens Point (Wisconsin) | 205.17 mi (330.18 km) |
| Mason City to Stevenson Ranch (California) | 1,487.96 mi (2,394.65 km) |
| Mason City to Stillwater (Minnesota) | 133.13 mi (214.25 km) |
| Mason City to Stillwater (Oklahoma) | 526.67 mi (847.60 km) |
| Mason City to Stockbridge (Georgia) | 822.58 mi (1,323.82 km) |
| Mason City to Stockton (California) | 1,510.49 mi (2,430.90 km) |
| Mason City to Stone Ridge (Virginia) | 864.23 mi (1,390.85 km) |
| Mason City to Stonecrest (Georgia) | 816.42 mi (1,313.90 km) |
| Mason City to Stony Brook (New York) | 1,039.19 mi (1,672.41 km) |
