| Mason City to San Luis Obispo (California) | 1,559.61 mi (2,509.94 km) |
| Mason City to San Marcos (California) | 1,467.69 mi (2,362.02 km) |
| Mason City to San Marcos (Texas) | 953.76 mi (1,534.92 km) |
| Mason City to San Marino (California) | 1,474.71 mi (2,373.32 km) |
| Mason City to San Mateo (California) | 1,572.28 mi (2,530.34 km) |
| Mason City to San Pablo (California) | 1,562.75 mi (2,515.00 km) |
| Mason City to San Rafael (California) | 1,571.05 mi (2,528.37 km) |
| Mason City to San Ramon (California) | 1,547.68 mi (2,490.74 km) |
| Mason City to San Tan Valley (Arizona) | 1,207.99 mi (1,944.07 km) |
| Mason City to Sand Springs (Oklahoma) | 508.92 mi (819.03 km) |
| Mason City to Sandusky (Ohio) | 548.81 mi (883.22 km) |
| Mason City to Sandy (Oregon) | 1,438.60 mi (2,315.21 km) |
| Mason City to Sandy (Utah) | 974.01 mi (1,567.52 km) |
| Mason City to Sandy Springs (Georgia) | 794.48 mi (1,278.59 km) |
| Mason City to Sanford (Florida) | 1,192.64 mi (1,919.37 km) |
