| Holyhead to Hilliard (Ohio) | 3,637.07 mi (5,853.30 km) |
| Holyhead to Hillsboro (Oregon) | 4,702.07 mi (7,567.25 km) |
| Holyhead to Hillsborough (California) | 5,142.61 mi (8,276.24 km) |
| Holyhead to Hillsborough (New Jersey) | 3,279.30 mi (5,277.52 km) |
| Holyhead to Hilo (Hawaii) | 7,093.49 mi (11,415.87 km) |
| Holyhead to Hilton Head Island (South Carolina) | 3,920.05 mi (6,308.72 km) |
| Holyhead to Hinesville (Georgia) | 3,973.27 mi (6,394.36 km) |
| Holyhead to Hinsdale (Illinois) | 3,737.37 mi (6,014.72 km) |
| Holyhead to Hobart (Indiana) | 3,726.09 mi (5,996.56 km) |
| Holyhead to Hobbs (New Mexico) | 4,764.74 mi (7,668.11 km) |
| Holyhead to Hobe Sound (Florida) | 4,154.40 mi (6,685.85 km) |
| Holyhead to Hoboken (New Jersey) | 3,243.67 mi (5,220.18 km) |
| Holyhead to Hockessin (Delaware) | 3,353.09 mi (5,396.28 km) |
| Holyhead to Hoffman Estates (Illinois) | 3,733.27 mi (6,008.11 km) |
| Holyhead to Holbrook (New York) | 3,203.05 mi (5,154.82 km) |
