| Potomac to Groveton (Virginia) | 18.27 mi (29.41 km) |
| Potomac to Grovetown (Georgia) | 475.04 mi (764.50 km) |
| Potomac to Guayama (Puerto Rico) | 1,598.84 mi (2,573.09 km) |
| Potomac to Guaynabo (Puerto Rico) | 1,572.67 mi (2,530.96 km) |
| Potomac to Gulf Shores (Alabama) | 848.05 mi (1,364.81 km) |
| Potomac to Gulfport (Florida) | 840.59 mi (1,352.81 km) |
| Potomac to Gulfport (Mississippi) | 896.80 mi (1,443.26 km) |
| Potomac to Gunbarrel (Colorado) | 1,486.36 mi (2,392.07 km) |
| Potomac to Gurnee (Illinois) | 608.25 mi (978.88 km) |
| Potomac to Guthrie (Oklahoma) | 1,129.58 mi (1,817.88 km) |
| Potomac to Guttenberg (New Jersey) | 208.98 mi (336.31 km) |
| Potomac to Guymon (Oklahoma) | 1,330.48 mi (2,141.20 km) |
| Potomac to Hacienda Heights (California) | 2,271.94 mi (3,656.33 km) |
| Potomac to Hackensack (New Jersey) | 211.13 mi (339.78 km) |
| Potomac to Hackettstown (New Jersey) | 178.61 mi (287.45 km) |
