| Mason City to Abilene (Texas) | 819.95 mi (1,319.59 km) |
| Mason City to Accokeek (Maryland) | 898.68 mi (1,446.29 km) |
| Mason City to Acworth (Georgia) | 777.97 mi (1,252.02 km) |
| Mason City to Ada (Oklahoma) | 608.26 mi (978.90 km) |
| Mason City to Addison (Illinois) | 277.28 mi (446.24 km) |
| Mason City to Addison (Texas) | 731.10 mi (1,176.59 km) |
| Mason City to Adelanto (California) | 1,425.32 mi (2,293.83 km) |
| Mason City to Adelphi (Maryland) | 891.09 mi (1,434.08 km) |
| Mason City to Adrian (Michigan) | 473.85 mi (762.59 km) |
| Mason City to Affton (Missouri) | 351.39 mi (565.50 km) |
| Mason City to Agoura Hills (California) | 1,505.01 mi (2,422.08 km) |
| Mason City to Aguadilla (Puerto Rico) | 2,283.93 mi (3,675.63 km) |
| Mason City to Aiken (South Carolina) | 908.35 mi (1,461.84 km) |
| Mason City to Akron (Ohio) | 614.80 mi (989.43 km) |
| Mason City to Alabaster (Alabama) | 767.90 mi (1,235.81 km) |
