| Castel Gandolfo to Hormigueros (Puerto Rico) | 4,873.46 mi (7,843.07 km) |
| Castel Gandolfo to Horn Lake (Mississippi) | 5,230.43 mi (8,417.56 km) |
| Castel Gandolfo to Hot Springs (Arkansas) | 5,378.37 mi (8,655.65 km) |
| Castel Gandolfo to Hot Springs Village (Arkansas) | 5,366.94 mi (8,637.26 km) |
| Castel Gandolfo to Houma (Louisiana) | 5,506.83 mi (8,862.38 km) |
| Castel Gandolfo to Houston (Texas) | 5,701.36 mi (9,175.46 km) |
| Castel Gandolfo to Howard (Wisconsin) | 4,725.72 mi (7,605.31 km) |
| Castel Gandolfo to Huber Heights (Ohio) | 4,763.57 mi (7,666.23 km) |
| Castel Gandolfo to Hudson (Florida) | 5,196.99 mi (8,363.75 km) |
| Castel Gandolfo to Hudson (Ohio) | 4,594.09 mi (7,393.48 km) |
| Castel Gandolfo to Hudson (Wisconsin) | 4,885.01 mi (7,861.66 km) |
| Castel Gandolfo to Hueytown (Alabama) | 5,168.44 mi (8,317.80 km) |
| Castel Gandolfo to Hugo (Minnesota) | 4,884.38 mi (7,860.64 km) |
| Castel Gandolfo to Humacao (Puerto Rico) | 4,806.60 mi (7,735.47 km) |
| Castel Gandolfo to Humble (Texas) | 5,686.15 mi (9,150.97 km) |
