| Hemel Hempstead to Hilliard (Ohio) | 3,839.03 mi (6,178.32 km) |
| Hemel Hempstead to Hillsboro (Oregon) | 4,897.12 mi (7,881.15 km) |
| Hemel Hempstead to Hillsborough (California) | 5,342.51 mi (8,597.94 km) |
| Hemel Hempstead to Hillsborough (New Jersey) | 3,477.26 mi (5,596.11 km) |
| Hemel Hempstead to Hilo (Hawaii) | 7,267.90 mi (11,696.55 km) |
| Hemel Hempstead to Hilton Head Island (South Carolina) | 4,114.36 mi (6,621.43 km) |
| Hemel Hempstead to Hinesville (Georgia) | 4,167.94 mi (6,707.66 km) |
| Hemel Hempstead to Hinsdale (Illinois) | 3,941.65 mi (6,343.48 km) |
| Hemel Hempstead to Hobart (Indiana) | 3,930.12 mi (6,324.91 km) |
| Hemel Hempstead to Hobbs (New Mexico) | 4,969.84 mi (7,998.18 km) |
| Hemel Hempstead to Hobe Sound (Florida) | 4,342.87 mi (6,989.17 km) |
| Hemel Hempstead to Hoboken (New Jersey) | 3,441.48 mi (5,538.53 km) |
| Hemel Hempstead to Hockessin (Delaware) | 3,551.00 mi (5,714.78 km) |
| Hemel Hempstead to Hoffman Estates (Illinois) | 3,937.68 mi (6,337.09 km) |
| Hemel Hempstead to Holbrook (New York) | 3,400.30 mi (5,472.26 km) |
