| Hemel Hempstead to Hormigueros (Puerto Rico) | 4,246.74 mi (6,834.47 km) |
| Hemel Hempstead to Horn Lake (Mississippi) | 4,354.53 mi (7,007.94 km) |
| Hemel Hempstead to Hot Springs (Arkansas) | 4,494.96 mi (7,233.94 km) |
| Hemel Hempstead to Hot Springs Village (Arkansas) | 4,483.18 mi (7,214.98 km) |
| Hemel Hempstead to Houma (Louisiana) | 4,651.93 mi (7,486.55 km) |
| Hemel Hempstead to Houston (Texas) | 4,827.95 mi (7,769.83 km) |
| Hemel Hempstead to Howard (Wisconsin) | 3,820.14 mi (6,147.92 km) |
| Hemel Hempstead to Huber Heights (Ohio) | 3,884.73 mi (6,251.86 km) |
| Hemel Hempstead to Hudson (Florida) | 4,384.84 mi (7,056.71 km) |
| Hemel Hempstead to Hudson (Ohio) | 3,716.47 mi (5,981.08 km) |
| Hemel Hempstead to Hudson (Wisconsin) | 3,971.06 mi (6,390.80 km) |
| Hemel Hempstead to Hueytown (Alabama) | 4,309.81 mi (6,935.96 km) |
| Hemel Hempstead to Hugo (Minnesota) | 3,969.67 mi (6,388.56 km) |
| Hemel Hempstead to Humacao (Puerto Rico) | 4,191.17 mi (6,745.03 km) |
| Hemel Hempstead to Humble (Texas) | 4,812.37 mi (7,744.77 km) |
