| Potomac to Humble (Texas) | 1,199.67 mi (1,930.68 km) |
| Potomac to Hunters Creek (Florida) | 775.13 mi (1,247.46 km) |
| Potomac to Huntersville (North Carolina) | 321.02 mi (516.63 km) |
| Potomac to Huntington (Indiana) | 458.58 mi (738.01 km) |
| Potomac to Huntington (Virginia) | 16.68 mi (26.84 km) |
| Potomac to Huntington (West Virginia) | 285.53 mi (459.52 km) |
| Potomac to Huntington Beach (California) | 2,280.96 mi (3,670.85 km) |
| Potomac to Huntington Park (California) | 2,285.42 mi (3,678.03 km) |
| Potomac to Huntington Station (New York) | 237.25 mi (381.82 km) |
| Potomac to Huntley (Illinois) | 627.89 mi (1,010.48 km) |
| Potomac to Huntsville (Alabama) | 600.93 mi (967.11 km) |
| Potomac to Huntsville (Texas) | 1,185.77 mi (1,908.31 km) |
| Potomac to Huron (South Dakota) | 1,141.73 mi (1,837.44 km) |
| Potomac to Hurricane (Utah) | 1,957.75 mi (3,150.69 km) |
| Potomac to Hurst (Texas) | 1,193.84 mi (1,921.31 km) |
