| Holyhead to Hormigueros (Puerto Rico) | 4,090.54 mi (6,583.10 km) |
| Holyhead to Horn Lake (Mississippi) | 4,152.43 mi (6,682.69 km) |
| Holyhead to Hot Springs (Arkansas) | 4,291.89 mi (6,907.13 km) |
| Holyhead to Hot Springs Village (Arkansas) | 4,280.07 mi (6,888.10 km) |
| Holyhead to Houma (Louisiana) | 4,452.53 mi (7,165.65 km) |
| Holyhead to Houston (Texas) | 4,625.94 mi (7,444.73 km) |
| Holyhead to Howard (Wisconsin) | 3,615.11 mi (5,817.96 km) |
| Holyhead to Huber Heights (Ohio) | 3,682.48 mi (5,926.38 km) |
| Holyhead to Hudson (Florida) | 4,192.52 mi (6,747.20 km) |
| Holyhead to Hudson (Ohio) | 3,514.48 mi (5,656.01 km) |
| Holyhead to Hudson (Wisconsin) | 3,765.70 mi (6,060.30 km) |
| Holyhead to Hueytown (Alabama) | 4,110.12 mi (6,614.59 km) |
| Holyhead to Hugo (Minnesota) | 3,764.30 mi (6,058.06 km) |
| Holyhead to Humacao (Puerto Rico) | 4,037.56 mi (6,497.83 km) |
| Holyhead to Humble (Texas) | 4,610.33 mi (7,419.61 km) |
