| Holyhead to Hazleton (Pennsylvania) | 3,312.16 mi (5,330.40 km) |
| Holyhead to Healdsburg (California) | 5,096.20 mi (8,201.53 km) |
| Holyhead to Heath (Ohio) | 3,609.63 mi (5,809.13 km) |
| Holyhead to Heber (Utah) | 4,633.24 mi (7,456.48 km) |
| Holyhead to Helena (Alabama) | 4,111.48 mi (6,616.80 km) |
| Holyhead to Helena (Montana) | 4,326.59 mi (6,962.97 km) |
| Holyhead to Hemet (California) | 5,192.53 mi (8,356.57 km) |
| Holyhead to Henderson (Kentucky) | 3,913.67 mi (6,298.44 km) |
| Holyhead to Henderson (Nevada) | 4,999.86 mi (8,046.50 km) |
| Holyhead to Henderson (North Carolina) | 3,623.95 mi (5,832.19 km) |
| Holyhead to Henderson (Texas) | 4,479.10 mi (7,208.41 km) |
| Holyhead to Hendersonville (North Carolina) | 3,834.40 mi (6,170.87 km) |
| Holyhead to Hendersonville (Tennessee) | 3,950.40 mi (6,357.55 km) |
| Holyhead to Hercules (California) | 5,113.62 mi (8,229.58 km) |
| Holyhead to Hereford (Texas) | 4,625.49 mi (7,444.00 km) |
