| Mason City to San Diego (California) | 1,477.39 mi (2,377.63 km) |
| Mason City to San Diego Country Estates (California) | 1,454.44 mi (2,340.70 km) |
| Mason City to San Dimas (California) | 1,460.56 mi (2,350.55 km) |
| Mason City to San Fernando (California) | 1,484.24 mi (2,388.65 km) |
| Mason City to San Francisco (California) | 1,573.42 mi (2,532.18 km) |
| Mason City to San Gabriel (California) | 1,475.05 mi (2,373.86 km) |
| Mason City to San Germán (Puerto Rico) | 2,307.98 mi (3,714.33 km) |
| Mason City to San Jacinto (California) | 1,433.13 mi (2,306.40 km) |
| Mason City to San Jose (California) | 1,555.95 mi (2,504.05 km) |
| Mason City to San Juan (Puerto Rico) | 2,328.66 mi (3,747.61 km) |
| Mason City to San Juan (Texas) | 1,204.44 mi (1,938.36 km) |
| Mason City to San Juan Capistrano (California) | 1,476.19 mi (2,375.70 km) |
| Mason City to San Leandro (California) | 1,560.40 mi (2,511.22 km) |
| Mason City to San Lorenzo (California) | 1,559.98 mi (2,510.55 km) |
| Mason City to San Luis (Arizona) | 1,379.54 mi (2,220.15 km) |
