| Key West to Horizon West (Florida) | 268.10 mi (431.46 km) |
| Key West to Hormigueros (Puerto Rico) | 1,041.37 mi (1,675.92 km) |
| Key West to Horn Lake (Mississippi) | 871.68 mi (1,402.84 km) |
| Key West to Hot Springs (Arkansas) | 962.77 mi (1,549.43 km) |
| Key West to Hot Springs Village (Arkansas) | 967.04 mi (1,556.30 km) |
| Key West to Houma (Louisiana) | 649.13 mi (1,044.67 km) |
| Key West to Houston (Texas) | 910.24 mi (1,464.90 km) |
| Key West to Howard (Wisconsin) | 1,427.09 mi (2,296.68 km) |
| Key West to Huber Heights (Ohio) | 1,065.47 mi (1,714.71 km) |
| Key West to Hudson (Florida) | 268.22 mi (431.66 km) |
| Key West to Hudson (Ohio) | 1,152.34 mi (1,854.52 km) |
| Key West to Hudson (Wisconsin) | 1,537.13 mi (2,473.77 km) |
| Key West to Hueytown (Alabama) | 689.04 mi (1,108.90 km) |
| Key West to Hugo (Minnesota) | 1,554.70 mi (2,502.04 km) |
| Key West to Humacao (Puerto Rico) | 1,117.19 mi (1,797.94 km) |
