| Herndon to Groveton (Virginia) | 21.23 mi (34.16 km) |
| Herndon to Grovetown (Georgia) | 466.37 mi (750.55 km) |
| Herndon to Guayama (Puerto Rico) | 1,600.99 mi (2,576.54 km) |
| Herndon to Guaynabo (Puerto Rico) | 1,574.89 mi (2,534.54 km) |
| Herndon to Gulf Shores (Alabama) | 838.36 mi (1,349.21 km) |
| Herndon to Gulfport (Florida) | 833.68 mi (1,341.68 km) |
| Herndon to Gulfport (Mississippi) | 886.78 mi (1,427.13 km) |
| Herndon to Gunbarrel (Colorado) | 1,476.87 mi (2,376.79 km) |
| Herndon to Gurnee (Illinois) | 600.31 mi (966.11 km) |
| Herndon to Guthrie (Oklahoma) | 1,119.02 mi (1,800.89 km) |
| Herndon to Guttenberg (New Jersey) | 219.09 mi (352.59 km) |
| Herndon to Guymon (Oklahoma) | 1,320.19 mi (2,124.63 km) |
| Herndon to Hacienda Heights (California) | 2,261.85 mi (3,640.10 km) |
| Herndon to Hackensack (New Jersey) | 221.13 mi (355.87 km) |
| Herndon to Hackettstown (New Jersey) | 188.05 mi (302.63 km) |
