| Mason City to Groveton (Virginia) | 891.49 mi (1,434.71 km) |
| Mason City to Grovetown (Georgia) | 895.23 mi (1,440.73 km) |
| Mason City to Guayama (Puerto Rico) | 2,350.24 mi (3,782.35 km) |
| Mason City to Guaynabo (Puerto Rico) | 2,327.45 mi (3,745.66 km) |
| Mason City to Gulf Shores (Alabama) | 939.51 mi (1,512.00 km) |
| Mason City to Gulfport (Florida) | 1,214.70 mi (1,954.87 km) |
| Mason City to Gulfport (Mississippi) | 907.85 mi (1,461.04 km) |
| Mason City to Gunbarrel (Colorado) | 653.49 mi (1,051.69 km) |
| Mason City to Gurnee (Illinois) | 272.17 mi (438.01 km) |
| Mason City to Guthrie (Oklahoma) | 552.86 mi (889.74 km) |
| Mason City to Guttenberg (New Jersey) | 997.10 mi (1,604.68 km) |
| Mason City to Guymon (Oklahoma) | 625.11 mi (1,006.01 km) |
| Mason City to Hacienda Heights (California) | 1,472.60 mi (2,369.92 km) |
| Mason City to Hackensack (New Jersey) | 993.23 mi (1,598.46 km) |
| Mason City to Hackettstown (New Jersey) | 954.64 mi (1,536.34 km) |
