| Key West to Hamtramck (Michigan) | 1,234.18 mi (1,986.21 km) |
| Key West to Hanahan (South Carolina) | 587.91 mi (946.16 km) |
| Key West to Hanford (California) | 2,380.19 mi (3,830.54 km) |
| Key West to Hannibal (Missouri) | 1,186.33 mi (1,909.21 km) |
| Key West to Hanover (Pennsylvania) | 1,089.69 mi (1,753.69 km) |
| Key West to Hanover Park (Illinois) | 1,257.42 mi (2,023.62 km) |
| Key West to Happy Valley (Oregon) | 2,677.90 mi (4,309.66 km) |
| Key West to Harker Heights (Texas) | 1,066.95 mi (1,717.09 km) |
| Key West to Harlingen (Texas) | 999.53 mi (1,608.59 km) |
| Key West to Harper Woods (Michigan) | 1,236.78 mi (1,990.40 km) |
| Key West to Harrisburg (North Carolina) | 745.69 mi (1,200.07 km) |
| Key West to Harrisburg (Pennsylvania) | 1,121.90 mi (1,805.53 km) |
| Key West to Harrison (Arkansas) | 1,050.93 mi (1,691.31 km) |
| Key West to Harrison (New Jersey) | 1,201.38 mi (1,933.43 km) |
| Key West to Harrison (New York) | 1,228.35 mi (1,976.84 km) |
