| Grays to Hilliard (Ohio) | 3,878.11 mi (6,241.21 km) |
| Grays to Hillsboro (Oregon) | 4,933.46 mi (7,939.64 km) |
| Grays to Hillsborough (California) | 5,379.99 mi (8,658.26 km) |
| Grays to Hillsborough (New Jersey) | 3,515.86 mi (5,658.23 km) |
| Grays to Hilo (Hawaii) | 7,299.52 mi (11,747.43 km) |
| Grays to Hilton Head Island (South Carolina) | 4,152.44 mi (6,682.71 km) |
| Grays to Hinesville (Georgia) | 4,206.07 mi (6,769.02 km) |
| Grays to Hinsdale (Illinois) | 3,980.93 mi (6,406.69 km) |
| Grays to Hobart (Indiana) | 3,969.38 mi (6,388.10 km) |
| Grays to Hobbs (New Mexico) | 5,009.11 mi (8,061.39 km) |
| Grays to Hobe Sound (Florida) | 4,380.07 mi (7,049.04 km) |
| Grays to Hoboken (New Jersey) | 3,480.06 mi (5,600.61 km) |
| Grays to Hockessin (Delaware) | 3,589.59 mi (5,776.88 km) |
| Grays to Hoffman Estates (Illinois) | 3,976.96 mi (6,400.31 km) |
| Grays to Holbrook (New York) | 3,438.81 mi (5,534.23 km) |
