| Manassas to Groveton (Virginia) | 20.81 mi (33.48 km) |
| Manassas to Grovetown (Georgia) | 450.97 mi (725.76 km) |
| Manassas to Guayama (Puerto Rico) | 1,589.99 mi (2,558.84 km) |
| Manassas to Guaynabo (Puerto Rico) | 1,563.98 mi (2,516.97 km) |
| Manassas to Gulf Shores (Alabama) | 824.16 mi (1,326.36 km) |
| Manassas to Gulfport (Florida) | 817.52 mi (1,315.67 km) |
| Manassas to Gulfport (Mississippi) | 873.23 mi (1,405.33 km) |
| Manassas to Gunbarrel (Colorado) | 1,474.97 mi (2,373.74 km) |
| Manassas to Gurnee (Illinois) | 602.66 mi (969.89 km) |
| Manassas to Guthrie (Oklahoma) | 1,112.60 mi (1,790.56 km) |
| Manassas to Guttenberg (New Jersey) | 232.55 mi (374.25 km) |
| Manassas to Guymon (Oklahoma) | 1,315.24 mi (2,116.67 km) |
| Manassas to Hacienda Heights (California) | 2,257.78 mi (3,633.55 km) |
| Manassas to Hackensack (New Jersey) | 234.84 mi (377.94 km) |
| Manassas to Hackettstown (New Jersey) | 202.67 mi (326.17 km) |
