| Mason City to St. George (Utah) | 1,151.86 mi (1,853.74 km) |
| Mason City to St. Helens (Oregon) | 1,462.87 mi (2,354.26 km) |
| Mason City to St. James (New York) | 1,038.51 mi (1,671.32 km) |
| Mason City to St. John (Indiana) | 315.58 mi (507.88 km) |
| Mason City to St. Joseph (Missouri) | 248.73 mi (400.30 km) |
| Mason City to St. Louis (Missouri) | 347.84 mi (559.80 km) |
| Mason City to St. Louis Park (Minnesota) | 124.65 mi (200.60 km) |
| Mason City to St. Marys (Georgia) | 1,067.90 mi (1,718.61 km) |
| Mason City to St. Marys (Pennsylvania) | 757.47 mi (1,219.02 km) |
| Mason City to St. Matthews (Kentucky) | 520.62 mi (837.86 km) |
| Mason City to St. Michael (Minnesota) | 143.91 mi (231.60 km) |
| Mason City to St. Paul (Minnesota) | 124.40 mi (200.20 km) |
| Mason City to St. Peter (Minnesota) | 90.10 mi (145.01 km) |
| Mason City to St. Peters (Missouri) | 330.59 mi (532.03 km) |
| Mason City to St. Petersburg (Florida) | 1,213.00 mi (1,952.14 km) |
