| Mason City to Altus (Oklahoma) | 671.91 mi (1,081.33 km) |
| Mason City to Alum Rock (California) | 1,552.82 mi (2,499.02 km) |
| Mason City to Alvin (Texas) | 957.87 mi (1,541.54 km) |
| Mason City to Amarillo (Texas) | 717.17 mi (1,154.17 km) |
| Mason City to Amelia (Ohio) | 546.98 mi (880.28 km) |
| Mason City to American Canyon (California) | 1,552.83 mi (2,499.04 km) |
| Mason City to American Fork (Utah) | 975.13 mi (1,569.33 km) |
| Mason City to Americus (Georgia) | 908.07 mi (1,461.39 km) |
| Mason City to Ames (Iowa) | 80.51 mi (129.57 km) |
| Mason City to Amherst (Ohio) | 573.18 mi (922.44 km) |
| Mason City to Ammon (Idaho) | 941.28 mi (1,514.84 km) |
| Mason City to Amsterdam (New York) | 957.89 mi (1,541.58 km) |
| Mason City to Anacortes (Washington) | 1,454.45 mi (2,340.71 km) |
| Mason City to Anaheim (California) | 1,472.99 mi (2,370.55 km) |
| Mason City to Anchorage (Alaska) | 2,571.58 mi (4,138.55 km) |
