| Castel Gandolfo to Hilliard (Ohio) | 4,715.93 mi (7,589.55 km) |
| Castel Gandolfo to Hillsboro (Oregon) | 5,814.84 mi (9,358.09 km) |
| Castel Gandolfo to Hillsborough (California) | 6,267.64 mi (10,086.79 km) |
| Castel Gandolfo to Hillsborough (New Jersey) | 4,329.83 mi (6,968.18 km) |
| Castel Gandolfo to Hilo (Hawaii) | 8,120.15 mi (13,068.12 km) |
| Castel Gandolfo to Hilton Head Island (South Carolina) | 4,940.43 mi (7,950.86 km) |
| Castel Gandolfo to Hinesville (Georgia) | 4,995.74 mi (8,039.87 km) |
| Castel Gandolfo to Hinsdale (Illinois) | 4,837.89 mi (7,785.83 km) |
| Castel Gandolfo to Hobart (Indiana) | 4,823.84 mi (7,763.21 km) |
| Castel Gandolfo to Hobbs (New Mexico) | 5,874.74 mi (9,454.48 km) |
| Castel Gandolfo to Hobe Sound (Florida) | 5,133.42 mi (8,261.44 km) |
| Castel Gandolfo to Hoboken (New Jersey) | 4,293.39 mi (6,909.55 km) |
| Castel Gandolfo to Hockessin (Delaware) | 4,402.70 mi (7,085.46 km) |
| Castel Gandolfo to Hoffman Estates (Illinois) | 4,835.31 mi (7,781.68 km) |
| Castel Gandolfo to Holbrook (New York) | 4,249.23 mi (6,838.47 km) |
